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 Safety-enhanced laser array patent thumbnailnew patent Safety-enhanced laser array
When an unsafe port with a loss of signal is detected, a transceiver may enable one laser in a group of lasers associated with the unsafe port and may disable the remaining lasers. Then, the transceiver may instruct a transmitter associated with the one laser to transmit an optical signal on the unsafe port using a reduced transmit power that is less than a threshold value associated with the class 1 conditions and at a different time than enabled lasers in other groups of lasers.
Oracle International Corporation


 Depth mapping with a head mounted display using stereo cameras and structured light patent thumbnailnew patent Depth mapping with a head mounted display using stereo cameras and structured light
A tracking system generates a structured light pattern in a local area. The system includes an array of lasers that generate light.
Oculus Vr, Llc


 Electronically scored target array patent thumbnailnew patent Electronically scored target array
Implementations of an electronically scored target array are provided. In some implementations, the electronically scored target array may be used for training individuals in the use of rifles, hand guns, and similar weapons.

 Hybrid free space multiplexer for multichannel transmitter optical subassembly patent thumbnailHybrid free space multiplexer for multichannel transmitter optical subassembly
Embodiments described herein include a multichannel transmitter optical subassembly that includes a plurality of lasers and a signal combiner. The plurality of lasers may be configured to emit light each with a different one of a plurality of light signals, each of the plurality of light signals having a wavelength within one of a plurality of wavelength bands.
Finisar Corporation


 Ring constellations for decreased data latency and increased download rates patent thumbnailRing constellations for decreased data latency and increased download rates
A plurality of spacecraft may be dispersed into a ring constellation or structure. Data may be wirelessly relayed between spacecraft similar to data flowing in a ring network.
The Aerospace Corporation


 Lasers with beam-shape modification patent thumbnailLasers with beam-shape modification
A beam control structure for semiconductor lasers that allows modification of the shape of a beam allowing, for example, higher coupling into an optical fiber. The structure may comprise one or more of a tilted patio, a staircase, a reflective roof, and a reflective sidewall..
M/a-com Technology Solutions Holdings, Inc.


 Synchronized tunable mode-locked lasers patent thumbnailSynchronized tunable mode-locked lasers
A synchronized laser system for illuminating a sample with first and second laser light pulses, said system comprising: a trigger, said trigger being operative to issue first and second trigger signals, said first and second trigger signals being emitted at an adjustable frequency with a predetermined delay therebetween; a first tunable mode-locked laser operative for emitting said first laser light pulses in response to receiving a train of said first trigger signals, a first wavelength of said first laser light pulses being dependent on said adjustable frequency in accordance with a first wavelength-frequency relationship; a second tunable mode-locked laser operative for emitting said second laser light pulses in response to receiving a train of said second trigger signals, a second wavelength of said second laser light pulses being dependent on said adjustable frequency in accordance with a second wavelength-frequency relationship; wherein said predetermined delay is such that said first and second laser light pulses are emitted so as to arrive substantially simultaneously in said sample; and said first and second wavelength-frequency relationships are selected to result in a predetermined relationship between said first and second wavelengths at each frequency.. .
Genia Photonics Inc.


 Fiber coupling efficiency of diode lasers patent thumbnailFiber coupling efficiency of diode lasers
A system and method for increasing the fiber coupling efficiency of diode lasers is disclosed. The diode laser has a diode pump source for generating a force to pump a laser and a double clad fiber directly coupled to the diode pump source instead of coupling to the multimode fiber.
Bae Systems Information And Electronic Systems Integration Inc.


 Systematic tracking, harvesting and in-space disposal of space debris patent thumbnailSystematic tracking, harvesting and in-space disposal of space debris
The embodiments of invention relates to the in-orbit clearance and disposal of space debris within approved geospatial orbital regions using a wide assortment of apparatus and devices encompassing trawler harvesting, lasers cannons and remote piloted handling methods. All events are guided and managed by integrated united states air force (usaf) geospatial software and database systems to locate, legally verify, and then remove and transport collected space debris to a disposal facility in high geostationary earth orbit (geo).

 Mid-infrared photodetectors patent thumbnailMid-infrared photodetectors
Nanoparticles, methods of manufacture, devices comprising the nanoparticles, methods of their manufacture, and methods of their use are provided herein. The nanoparticles and devices having photoabsorptions in the range of 1.7 μm to 12 μm and can be used as photoconductors, photodiodes, phototransistors, charge-coupled devices (ccd), luminescent probes, lasers, thermal imagers, night-vision systems, and/or photodetectors..
The University Of Chicago


Using tunable lasers in the design, manufacture, and implementation of integrated optical elements


Disclosed are systems and methods that use a tunable laser during optical thin-film fabrication. One disclosed system includes a tunable laser capable of generating electromagnetic radiation, one or more thin-film devices arranged to receive the electromagnetic radiation, each thin-film device including one or more optical layers deposited on a corresponding substrate and configured to generate optically interacted radiation upon receiving the electromagnetic radiation, and an optical transducer arranged to receive the optically interacted radiation from each of the one or more thin-film devices and configured to generate output signals corresponding to the optically interacted radiation received from each of the one or more thin-film devices..
Halliburton Energy Services, Inc.


Method for mode control in multimode semiconductor waveguide lasers


One embodiment is a wide stripe semiconductor waveguide, which is cleaved at a talbot length thereof, the wide stripe semiconductor waveguide having facets with mirror coatings. A system provides for selective pumping the wide stripe semiconductor waveguide to create and support a talbot mode.
Northrop Grumman Systems Corporation


Fast calibration and programming optical components


A method and apparatus for calibrating and controlling tunable lasers are disclosed. Multiple methodologies disclosed herein may be used, alone or in combination, which significantly speed up a calibration time and thus provide a significant advantage over existing technology in calibrating the tunable lasers.
Oe Solutions America, Inc.


Semiconductor laser light source


In conventional semiconductor laser light sources, since intervals of light emitter waveguides are changed or stresses which are applied on chips of a laser array are controlled in the production process, there exists a problem that the productivity is lowered. A structure of a heat sink 3a, on which a semiconductor laser array 2 is mounted in which a plurality of semiconductor lasers are arrayed at equal intervals in a stripe width direction, is configured so that the heat radiation efficiencies of the plurality of semiconductor lasers are not constant between the central region and other regions in the stripe width direction.
Mitsubishi Electric Corporation


Lithographic printing plate precursors and coating


A coating for use with a hydrophilic sheet substrate to form a lithographic printing plate precursor, including at least one compound a silane compound and at least one compound b phosphinic acid or organic derivative thereof. Compounds a and b experience a synergistic interaction which substantially increases adhesion to the substrate of areas imaged by radiation.
Anocoil Corporation


High power optical switch


An optical system capable of routing primary and secondary high power lasers through a blocking switch is described.. .
Raytheon Company


Multiple integrated tips scanning probe microscope


Device and system for characterizing samples using multiple integrated tips scanning probe microscopy. Multiple integrated tips (mit) probes are comprised of two or more monolithically integrated and movable afm tips positioned to within nm of each other, enabling unprecedented micro to nanoscale probing functionality in vacuum or ambient conditions.
Xallent, Llc


Terahertz spectroscopy system and method


A terahertz spectrometer includes: a terahertz-wave emitter and a terahertz receiver elements. The terahertz wave generated by means of generating beat frequency corresponding to the difference between two rapidly tunable continuous wave lasers.
Novatrans Group Sa


Photonic devices and methods of using and making photonic devices


Examples of the present invention include integrated erbium-doped waveguide lasers designed for silicon photonic systems. In some examples, these lasers include laser cavities defined by distributed bragg reflectors (dbrs) formed in silicon nitride-based waveguides.

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Metal contacts to group iv semiconductors by inserting interfacial atomic monolayers


Techniques for reducing the specific contact resistance of metal-semiconductor (group iv) junctions by interposing a monolayer of group v or group iii atoms at the interface between the metal and the semiconductor, or interposing a bi-layer made of one monolayer of each, or interposing multiple such bi-layers. The resulting low specific resistance metal-group iv semiconductor junctions find application as a low resistance electrode in semiconductor devices including electronic devices (e.g., transistors, diodes, etc.) and optoelectronic devices (e.g., lasers, solar cells, photodetectors, etc.) and/or as a metal source and/or drain region (or a portion thereof) in a field effect transistor (fet).
Acorn Technologies, Inc.


Multiple-beam microlen


The invention addresses the coupling of light between one or more multicore fibers and optoelectronic transducers, such as lasers or photodetectors, and/or single core fibers. More specifically, the invention utilizes a single microlens element to couple multiple optical data signals between multiple optoelectronic transducers and multiple cores of a multiple-core fiber (mcf), or to couple signals from multiple single-core fibers to multiple cores of a mcf.
Commscope, Inc. Of North Carolina


Multiplexed optoelectronic engines


An example device includes a first semiconductor component comprising at least two lasers to emit light at a first wavelength; a second semiconductor component comprising at least two lasers to emit light at a second wavelength, the first wavelength being different from the second wavelength; and an optical multiplexer to receive light from two lasers at the first wavelength and light from two lasers at the second wavelength. The optical multiplexer component includes a first output interface to couple light from one laser at the first wavelength and light from one laser at the second wavelength to a first optical fiber, and a second output interface to couple light from one laser at the first wavelength and light from one laser at the second wavelength beams to a second optical fiber..
Hewlett Packard Enterprise Development Lp


Polarizing and polarization maintaining leakage channel fibers


This disclosure relates to polarizing optical fibers and polarization maintaining optical fibers, including active and/or passive implementations. An embodiment includes a polarizing (pz) optical fiber that includes stress applying parts (saps) disposed in a first cladding region, the saps comprising a material with a thermal expansion coefficient, αsap.
αsap−αcore


Laser device comprising optically pumped extended cavity laser


The invention describes a laser device (100) enabling controlled emission of individual laser beams (194). The laser device (100) comprises an optically pumped extended cavity laser with one gain element whereby a multitude of pump lasers (110) are provided in order to generate independent pump beams (191) and thus corresponding laser beams (194).
Koninklijke Philips N.v.


Ring laser sensor


The present invention is suitable for the technical field of sensing, and provides a ring laser sensor comprising a pump source, a common section, and a reference section and a detection section, the common section is provided with a gain medium, the common section and the reference section form a first ring laser resonator, and the common section and the detection section form a second ring laser resonator, lasers are transmitted oppositely in the first ring laser resonator and the second ring laser resonator, the detection section is provided with a sensing element capable of causing an optical path difference; the common section is provided with an output unit or each of the reference section and the detection is provided with the output unit, the output unit is connected to a photoelectric detector through a light uniting unit. In the present invention, two ring laser resonators with opposite transmission directions is provided, the detection section is provided with the sensing element, and because the frequencies of the laser are sensitive to the changes of the optical paths in the resonators, the sensitivity and accuracy of the sensor are high, and the two resonators of the sensor have common optical path, such that the sensor has good anti jamming capacity and is suitable for measuring the small changes in a variety of physical quantities..
Shenzhen University


Sensor based on laser


The present invention is suitable for the technical field of sensing, and provides an sensor based on laser, comprising a pump source, a common section, a reference section and a detection section, the common section is provided with a gain medium, and the detection section is provided with a sensing element capable of causing an optical path difference; the reference section and the detection section is connected to the common section though a first polarization splitting unit and a second polarization splitting unit; the common section is provided with an output unit or each of the reference section and the detection is provided with the output unit, the output unit is connected to a photoelectric detector through a light uniting unit; a polarization rotation unit is disposed between the light uniting unit and the output unit. In the present invention, a heterodyne interference is generated by the two lasers with different frequency, the amounts of physical quantities are determined by detecting the frequency difference; and because the frequencies of the laser oscillations are sensitive to the changes of the optical paths in the resonators, the sensitivity and accuracy of the sensor are high, and the two resonators of the sensor have common optical path, such that the sensor has good anti-jamming capacity and is suitable for measuring the small changes in a variety of physical quantities..
Shenzhen University


Landscape light


A landscape light incorporating two or more lasers or leds of different colors (e.g., red, green, white, blue) in the same housing, each laser or led preferably having a separate lens. The apparatus projects any of a variety of colors including red, green, white, blue, or other colors, or combinations of any colors, as well as providing an optional flash/pulse setting for the lights.
Telebrands Corp.


Flat-folded ceramic slab lasers


In at least one illustrative embodiment, a laser may include a ceramic body defining a chamber containing a laser gas. The chamber may include first and second slab waveguide sections extending along parallel first and second axes and a third slab waveguide section extending along a perpendicular third axis.
Iradion Laser, Inc.


Multiple laser optical assembly


A multiple laser optical assembly comprises two laser subassemblies with two lasers bonded on two bases respectively, a polarization beam combiner (pbc), a lens, a mechanical housing and an optical fiber. The two subassemblies are configured to have orthogonal polarization directions from the two lasers and are assembled coaxially.

Quantum cascade laser (qcl) based gas sensing system and method


A system and method are disclosed for gas sensing over a wide tunable wavelength range provided by one or more quantum cascade lasers. A laser beam is generated within the wide tunable wavelength range, which is given by the sum of the wavelength ranges from the individual lasers.
Block Engineering, Llc


Detection system


A threat detection system is disclosed. The threat detection system may also determine the location of the threat.
Vision Engineering Solutions, Llc


Short duration pulse grid pattern laser treatment and methods


Embodiments of the invention provide systems for treating the retina and/or other areas of a patient's eye. The procedures may involve using one or more treatment beams (e.g., lasers) to cause photocoagulation or laser coagulation to finely cauterize ocular blood vessels and/or prevent blood vessel growth to induce one or more therapeutic benefits.
Iridex Corporation


Wavelength locking multimode diode lasers with fiber bragg grating in large mode area core


According to another aspect of the present disclosed technology, a diode laser assembly, includes an optical fiber having a cladding and a large mode area (lma) core, wherein the lma core comprises a fiber bragg grating disposed within the lma core, a plurality of diode lasers configured to emit light, optics configured to receive the light and to couple the light into the lma core, and one or more features in the optical fiber to couple higher order modes of the light leaving substantially single mode light to propagate in the lma core wherein a portion of the single mode light propagating in the lma core is reflected by the fiber bragg grating and is coupled back through the optics into the plurality of diode lasers to lock the wavelength of light emitted from each diode laser of the plurality.. .
Nlight Photonics


Light source device and projector having the light source device


A light source device includes light sources having semiconductor lasers, a condensing lens, an optical component between the light sources and the condensing lens, and a phosphor wheel. The optical component has an inclined optical surface, and the inclined optical surface has different inclination angles for each of the light sources.
Nichia Corporation


Target holders, multiple incidence angle, and multizone heating for bnnt synthesis


In the synthesis of boron nitride nanotubes (bnnts) via high temperature, high pressure methods, a boron feedstock may be elevated above its melting point in a nitrogen environment at an elevated pressure. Methods and apparatus for supporting the boron feedstock and subsequent boron melt are described that enhance bnnt synthesis.
Bnnt, Llc


Method and generation of coherent frequency combs


Embodiments of the invention provide apparatuses and methods for phase correlated seeding of parametric mixer and for generating coherent frequency combs. The parametric mixer may use two phase-correlated optical waves with different carrier frequencies to generate new optical waves centered at frequencies differing from the input waves, while retaining the input wave coherent properties.
Ram Photonics, Llc


Systems, methods and devices for collecting data at remote oil and natural gas sites


Systems, methods and devices are provided for detecting airborne particulates and/or gases at remote oil and natural gas sites, such as wells, and/or processing and refinery plants. One such system comprises an unmanned aerial vehicle (uav), such as a drone aircraft, configured for aerial dispatch to the remote site and wireless connection to an external processor, cloud apparatus or the like.

High-bandwidth underwater data communication system


An apparatus is described which uses directly modulated ingan light-emitting diodes (leds) or ingan lasers as the transmitters for an underwater data-communication device. The receiver uses automatic gain control to facilitate performance of the apparatus over a wide-range of distances and water turbidities..
Fairfield Industries Incorporated


Edge-emitting laser chip wafer layout that facilitates on-wafer testing of the lasers


Edge-emitting laser chip wafer layouts are provided that enable a variety of tests to be performed while the chips are on the wafer, including side-mode suppression ratio (smsr) tests. The laser chip wafer layouts include turning mirrors that direct light passing out of at least one of the facets of the chips away from the wafer.
Avago Technologies General Ip (singapore) Pte. Ltd


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Fat-fiber adapter for pump use


As kilowatt class fiber laser and amplifier systems become more in demand, there are ongoing efforts to improve optical fiber laser and amplifier designs to maximize efficiency and further increase the capacity of these high-energy optical fiber lasers and amplifiers. The present disclosure provides a fiber laser or amplifier system configured to efficiently and conveniently generate and couple high numerical aperture and high-energy pump light into a fiber laser or amplifier system..
Ofs Fitel, Llc


Pump and signal combiner for high numerical aperture use


As kilowatt class fiber laser and amplifier systems become more in demand, there are ongoing efforts to improve optical fiber laser and amplifier designs to maximize efficiency and further increase the capacity of these high-energy optical fiber lasers and amplifiers. The present disclosure provides a fiber laser or amplifier system configured to efficiently and conveniently generate and couple high numerical aperture and high-energy pump light into a fiber laser or amplifier system..
Ofs Fitel, Llc


Mass spectrometry using laserspray ionization


Disclosed herein are systems and methods for mass spectrometry using laserspray ionization (lsi). Lsi can create multiply-charged ions at atmospheric pressure for analysis and allows for analysis of high molecular weight molecules including molecules over 4000 daltons.
Wayne State University


Electrical switch device


Implementations of an electrical switch device are provided. In some implementations, the electrical switch device may be used to operate electrically powered firearm accessories (e.g., lasers and illumination tools).

Method and system for three-dimensional motion-tracking


One embodiment provides an apparatus for tracking movements of an object in a three-dimensional (3d) space. The apparatus can include one or more lasers, one or more optical sensors, and a processing unit.

Diffractive waveplate lenses and applications


Optical lenses, systems, devices and methods for fabricating and manufacturing diffractive waveplate lenses that allow setting the focal length sign of an optical system by positioning the lens with its front or back surface with respect to an incoming circular polarized light beam. Applications for the lenses include optical systems comprising fibers, diode lasers, waveplates, polarizers, and variable lenses, particularly, in the form of a set of polymer films with re-attachable adhesive layers.

Systems and methods for detecting a particle


A cytometry system having a computing system. The system includes a plurality of lasers controlled by the computing system to emit laser light.
Stratedigm, Inc.


Apparatus for generating high contrast optical signals, and exemplary applications


A display apparatus generates a high visibility optical signal, such as an icon, the icon comprising a symbol, shape, or other image-like representation. The icon becomes visible at an observation point during an illumination on-state.
Imra America, Inc.


Chemical, biological, and radioactive contamination remediation with lasers


A laser is used to clean surfaces contaminated with chemical, biological, or radioactive substances. The laser directs a laser beam onto the surfaces and the ejecta is collected by a getter which can be a version of vacuum cleaner.
Lawrence Livermore National Security, Llc


Gas-discharge laser power and energy control


The present disclosure is directed to simultaneously controlling peak pulse power and pulse energy in gas-discharge lasers. In an aspect, a radio-frequency power supply that is coupled to a gas-discharge laser is turned on to initiate delivery of a laser pulse.
Coherent, Inc.


Context imaging raman spectrometer


Methods and systems for raman spectroscopy and context imaging are disclosed. One or two lasers can be used to excite raman scattering in a sample, while a plurality of leds can illuminate the sample at a different wavelength.
California Institute Of Technology


Virtual lasers for interacting with augmented reality environments


Systems and methods enabling users to interact with an augmented reality environment are disclosed. Real-world objects may have unique markers which are recognized by mobile devices.
Eon Reality, Inc.


Illumination light projection for a depth camera


Various embodiments of tof depth cameras and methods for illuminating image environments with illumination light are provided herein. In one example, a tof depth camera configured to collect image data from an image environment illuminated by illumination light includes a light source including a plurality of surface-emitting lasers configured to generate coherent light.
Microsoft Technology Licensing, Llc


System and correlating camera views


A method for correlating views of two or more video camera systems includes obtaining a plurality of data point coordinate sets to represent relative positioning between the camera systems and data point objects in the environment. The views may be correlated through interpolation or extrapolation using the obtained data point coordinate sets.

Antenna feedback scheme for achieving narrow beam emission from plasmonic lasers


A distributed antenna-coupling feedback scheme and specially designed distributed feedback (dfb) metallic cavity and grating for laser application and in particular to plasmonic lasers ensuring a predesigned phase condition such that a mode traveling inside a waveguide is coupled/phase-locked to a mode traveling on the top metal improving the beam quality of the laser.. .

Ultra-wideband supercontinuum light source based on dual-band fiber laser


The present invention is applicable to the field of fiber laser technologies. In the present invention, two fiber lasers of different bands are used as seed sources to form a dual-band fiber laser that outputs beams of two bands simultaneously, and the dual-band fiber laser is used to pump the cascaded evolving assemblies.

Efficient cooling of lasers, led and photonics devices


The present invention provides an optoelectronic device comprising a heat source and a heat transfer fluid. The present invention also provides a method of preparing an optoelectronic device, which comprises (i) providing a heat source, and (ii) filling a space in the vicinity of the heat source with a heat transfer liquid.

Subsea in situ laser for laser assisted blow out preventer and methods of use


High power sub sea, and sub sea in situ laser beam generation, assemblies and cutting operations for use in riser blowout preventer systems for off shore exploration and production of energy resources, including hydrocarbons. The system utilizes high power sub sea lasers to provide laser beams to laser cutters that are associated with a riser, a blowout preventer, or other sub sea structure..

Films and film laser converting


Various methods of laser cutting polyolefin films are described, and particularly using carbon dioxide lasers. Also described are modified polyolefin materials which can be subjected to laser cutting..

Calibration of robot work paths


The calibration device combines a work object with an industrial robot and a robot tool. The work object uses a pair of beam projecting lasers and three plane projecting lasers, the laser beams intersecting at a laser intersecting point.

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Handpiece laser treatment apparatus capable of adjusting length of optical fiber


The present invention relates generally to a handpiece laser treatment apparatus for treating an affected area by irradiating lasers thereto. More particularly, the present invention relates to a handpiece laser treatment apparatus capable of adjusting the drawn length of an optical fiber in which laser is irradiated.

All-fiber laser frequency mixer and frequency-mixing fiber laser thereof


The present invention relates to the field of laser frequency-mixing technologies, and in particular, to an all-fiber laser frequency mixer and a frequency-mixing fiber laser thereof. In the all-fiber laser frequency mixer and the frequency-mixing fiber laser thereof, a graded index fiber coupling technology is used to implement an all-fiber laser frequency mixer, and the all-fiber laser frequency mixer is further combined with a fiber laser to implement an all-fiber frequency-mixing fiber laser.

Laser spectroscopy for downhole sensing of gases and fluids


A method for spectroscopic analysis of a fluid using electromagnetic radiation from lasers is provided. In one embodiment, the method includes sampling formation fluid within a well and determining formation fluid properties for the sampled formation fluid through downhole fluid analysis.

Gas mixture and electric arc joining or material processing with reduced pollutant emission


A gas mixture, a pressure tank containing the gas mixture, a method that uses the gas mixture during thermal spraying, cutting, joining, deposition welding and/or surface treatment by means of arcs, plasma and/or lasers, a device for preparing the gas mixture and a method for manufacturing the gas mixture are disclosed, wherein the gas mixture contains a protective gas and a protective gas additive selected from the group of ethers, cyclic amines containing at least one ether group, and mixtures thereof.. .

Wavefront correction for ophthalmic surgical lasers


A surgical laser system includes a laser engine, configured to generate a laser beam of laser pulses; a proximal optics and a distal optics, together configured to direct the laser beam to a target region, and to scan the laser beam in the target region through a scanning-point sequence; and an aberration sensor, configured to sense aberration by an aberration layer; a compensation controller, coupled to the aberration sensor, configured to generate compensation-point-dependent phase compensation control signals based on the sensed aberration; and a spatial phase compensator, positioned between the proximal optics and the distal optics, at a conjugate aberration surface, conjugate to the aberration layer, and coupled to the compensation controller, configured to receive the compensation-point-dependent phase compensation control signals, and to alter a phase of the laser beam in a compensation-point-dependent manner to compensate the sensed aberration.. .

Apparatus and measuring an anatomical angle of a body


An apparatus (20) for automatically measuring an anatomical angle of a body, the apparatus (20) comprising aligning means (23) for aligning an axis (22) of the apparatus (20) with anatomical landmarks of the body, sensing means (30) for sensing an orientation of the axis (22) while the axis is aligned with the landmarks, and processing means (40) for processing the sensed orientation. The sensing means (30) comprises a magnetometer (32) and an accelerometer (31), and the aligning means comprises a pair of lasers..

Laser alignment and calibration system for scanning lasers


A two dimensional scanning laser system may automatically detect a laser, then align and calibrate itself to scan over the sensor area. The system may have a laser with a controller that may cause the laser to be directed over two dimensions, as well as a sensor apparatus.
Z-image, Llc


Compact multi-zone infrared laser illuminator


Methods, devices and systems are described for selectively illuminating different zones of a field of view by a multi-zone illumination device. In one aspect, a multi-zone illuminator may include a plurality of vertical cavity surface emitting lasers (vcsels), and a plurality of micro-optical devices aligned with apertures of individual or groups of vcsels, which are configured to be individually activated to provide adjustable illumination to different zones of a field of view of an image sensor.
Trilumina Corp.


Optical semiconductor device and manufacturing method thereof


A semiconductor laser in a ridge waveguide structure includes: a semiconductor substrate; a lower cladding layer which is formed on the semiconductor substrate; an active layer and a semiconductor layer which are in parallel on the lower cladding layer and are connected with each other; a first upper cladding layer locally aligned above the active layer; a second upper cladding layer locally aligned above the semiconductor layer; and a third upper cladding layer locally aligned above the active layer to confine light which is guided in the active layer, wherein the semiconductor layer has a band gap which is larger than that of the active layer. According to this constitution, an optical semiconductor device with high reliability in which the ridge waveguide structure whose manufacturing is relatively easy is applied, and current diffusion and electrical crosstalk between lasers in the ridge waveguide structure are suppressed is enabled..
Fujitsu Limited


Optical transmitter or transmission unit in optical transmitter/receiver provided on opto-electric hybrid board


This present invention is provided with: a semiconductor laser for emitting laser light in a plurality of channels; optical waveguides optically coupled in a corresponding manner to the semiconductor lasers, the optical waveguides propagating laser light as input light for each channel; optical modulators for modulating the input light and generating an optical signal; and an optical signal output unit coupled to the optical modulators, the optical signal output unit outputting the optical signal propagated from the optical modulators to the exterior. The present invention is characterized in that the semiconductor laser is arranged on the opposite side from an optical branching unit and the optical modulators, with the optical signal output unit interposed therebetween, in the plane of an opto-electric hybrid board..

Multi-wavelength distributed raman amplification set-up


Techniques are presented herein to set power levels for multiple raman pump wavelengths in a distributed raman amplification configuration. A first receive power measurement is obtained at a second node with a controlled optical source at a first node turned on and with a plurality of raman pump lasers at different wavelengths at the second node turned off.
Cisco Technology, Inc.


Multi-mode fiber amplifier


A laser utilizes a cavity design which allows the stable generation of high peak power pulses from mode-locked multi-mode fiber lasers, greatly extending the peak power limits of conventional mode-locked single-mode fiber lasers. Mode-locking may be induced by insertion of a saturable absorber into the cavity and by inserting one or more mode-filters to ensure the oscillation of the fundamental mode in the multi-mode fiber.
Imra America, Inc.


Metal contacts to group iv semiconductors by inserting interfacial atomic monolayers


Techniques for reducing the specific contact resistance of metal-semiconductor (group iv) junctions by interposing a monolayer of group v or group iii atoms at the interface between the metal and the semiconductor, or interposing a bi-layer made of one monolayer of each, or interposing multiple such bi-layers. The resulting low specific resistance metal—group iv semiconductor junctions find application as a low resistance electrode in semiconductor devices including electronic devices (e.g., transistors, diodes, etc.) and optoelectronic devices (e.g., lasers, solar cells, photodetectors, etc.) and/or as a metal source and/or drain region (or a portion thereof) in a field effect transistor (fet).
Acorn Technologies, Inc.


Laser-based marking method and apparatus


A method for marking a thin workpiece is designed to prevent deformation of the workpiece. A plurality of lasers are opposed to respective opposite sides of the workpiece so as to both sides are heat treated.
Ipg Photonics Corporation


Medical device for radiotherapy treatment


The invention relies on a medical device for an intracorporeal location, wherein: it comprises a deformable armature, at least partially made of a shape memory material and having an ea end and an eb end, said ea end being larger than said eb end, it has an essentially triangular, trapezoidal, ovally or diamond-shaped, the sides of which extending between said eb end and the corners of said ea end, said deformable armature includes a middle rip extending from said ea end to said eb end and multiple cross elements extending between the middle rip and said sides, wherein said sides are formed by sides braces, it comprises at least one x-ray visible marker fixed at the deformable armature selected from the group consisting of gold, silver, platinum, tantalum, tungsten, niobium, palladium, iridium, it comprises a guide suited for the intracorporeal introduction of said medical device, and an extraction holder of the medical device. The invention also relies on a device for the introduction, by an endoscopic or percutaneous way, of the medical device, and on a method for accurately targeting a target area during radiation treatment through image guidance comprising determining the location of the medical device in real time using at least one method of targeting selected from the group consisting of lasers, visual, infrared, mrumrs, rf and radiation; and modifying the radiation treatment beam path to adaptively compensate for a change in position of the target area..

Semiconductor interband cascade lasers with enhanced optical confinement


A semiconductor interband cascade laser having an outer cladding layer formed from a material selected from the group consisting of a high-doped semiconductor material, a dielectric material and/or a metal, having an outer cladding layer refractive index and/or permittivity; an intermediate cladding layer formed from a semiconductor material having an intermediate cladding layer refractive index and/or permittivity which is greater than the outer cladding layer refractive index and/or permittivity; and a waveguide core having an active region having an active region refractive index and/or permittivity, the active region configured to generate light based on interband transitions, the light defining a lasing wavelength, wherein the intermediate cladding layer is positioned between the outer cladding layer and the waveguide core; and wherein the active region refractive index and/or permittivity is greater than the intermediate cladding layer refractive index and/or permittivity. The waveguide core may further include at least one separate confinement layer (scl) positioned between the active region and the intermediate cladding layer..
The Board Of Regents Of The University Of Oklahoma


Generating terahertz frequency combs from quantum cascade lasers using nonlinear frequency mixing


Methods and systems include generating one or more mid-infrared frequencies based at least upon electron transitions in one or more quantum cascade heterostructures. The quantum cascade heterostructures are concurrently configured with a significant second-order nonlinear susceptibility, a significant third-order nonlinear susceptibility, and an insignificant group velocity dispersion.
Board Of Regents, The University Of Texas System


Comb resolved fourier transform spectroscopy


Systems and methods for high resolution and high sensitivity spectroscopy are disclosed. High resolution can be obtained in conjunction with comb sources via comb resolved spectroscopy.
Imra America, Inc.


A for projecting an image with improved safety


A method of projecting an image with improved safety, using a projection device which comprises a mems mirror which oscillates about one or more oscillation axes to scan light from one or more lasers, across a display screen, to project pixels which define an image onto a display screen, the method comprising the steps of, (a) selecting a laser class for the projection device; (b) calculating relationship between maximum accessible emission limit and distance, for the selected laser class, for a predetermined number of black pixels in an image; (c) repeating step (b) a plurality of times, each for a different predetermined number of black pixels in the image, so as to provide a plurality of relationships between maximum accessible emission limit and distance, for the selected laser class, wherein each relationship is for different predetermined number of black pixels in the image; (d) determining the distance between a display screen and the projection device; (e) selecting a desired maximum accessible emission limit for an image which is to be projected by the projection device onto said display screen; (f) selecting a relationship, from the plurality of relationships between maximum accessible emission limit and distance, which contains a maximum accessible emission limit which is equal to the desired maximum accessible emission limit selected in step (e), at the distance determined in step (d) and; (g) identifying the predetermined number of black pixels in the image for that selected relationship; (h) modifying a pixel stream which defines said image which is to be projected by the projection device, so that the pixel stream is provided with said predetermined number of black pixels identified in step (g). There is further provided a corresponding projection device..
Intel Corporation


Method and polarization determination and/or control in optical fiber amplifying systems


Methods and apparatuses for determining the polarization state and for providing polarization control in optical fiber lasers and amplifiers. One embodiment of the invention is an optical fiber amplifying system including a circulator (260) having a first optical port (260a), a second optical port (260b) that is configured to output radiation received from the first optical port, and a third optical port (260c) that is configured to output radiation received from the second optical port; one or more amplifier stages (216) connected in series, together having an optical input (216a) optically coupled to the second port of the circulator, and an optical output (216b); and a polarization detector (240) having an optical input optically coupled to the third port of the circulator.
Nufern


Multiple beam combiner for laser processing apparatus


Apparatus and methods for combining beams of amplified radiation are disclosed. A beam combiner has a collimating optic positioned to receive a plurality of coherent radiation beams at a constant angle of incidence with respect to an optical axis of the collimating optic.
Applied Materials, Inc.


Projectile weapon training apparatus using visual display to determine targeting, accuracy, and/or reaction timing


This apparatus offers multiple training scenarios which designates the targets to be hit and evaluates response. The apparatus assists in the evaluation and training of a shooter using multiple scenarios, detection of target strikes, timing, accuracy, and threat assessment.

Mode control in vertical-cavity surface-emitting lasers


Aspects of the subject disclosure may include, for example, a first distributed bragg reflector, a second distributed bragg reflector, an active region with an oxide aperture between the first and second distributed bragg reflectors, and a dielectric layer, where a positioning of the dielectric layer with respect to the first and second distributed bragg reflectors and the oxide aperture causes suppression of higher modes of the vertical-cavity surface-emitting laser device. Other embodiments are disclosed..
The Board Of Trustees Of The University Of Illinois


Tunable semiconductor laser based on reconstruction-equivalent chirp and series mode or series and parallel hybrid integration, and preparation thereof


A tunable distributed feedback (dfb) semiconductor laser based on a series mode or a series and parallel hybrid mode. A grating structure of the laser is a sampling bragg grating based on the reconstruction-equivalent chirp technology.
Nanjing University Science Park Development Co., Ltd.


Method and applications of thin-film membrane transfer


The disclosure relates to method and apparatus for micro-contact printing of micro-electromechanical systems (“mems”) in a solvent-free environment. The disclosed embodiments enable forming a composite membrane over a parylene layer and transferring the composite structure to a receiving structure to form one or more microcavities covered by the composite membrane.
Massachusetts Institute Of Technology


Quantum reflex integration apparatus


Embodiments of the present invention provide an apparatus for performing quantum reflex integration. A signal generator (106) is configured and disposed to generate an output pattern (220).

Grid pattern laser treatment and methods


Embodiments of the invention provide systems and methods for treating the retina and/or other areas of a patient's eye. The procedures may involve using one or more treatment beams (e.g., lasers) to cause photocoagulation or laser coagulation to finely cauterize ocular blood vessels and/or prevent blood vessel growth to induce one or more therapeutic benefits.
Iridex Corporation


Production of a component by selective laser melting


A method for producing a component by selective laser melting, wherein a number of lasers arranged next to one another generate a laser field, as a result of which powdery material can be melted in a selective manner for the purposes of generating contours. In the process, individual lasers of the laser arrangement can be switched on or off in a selective matter in order to irradiate or not irradiate certain regions.
Siemens Aktiengesellschaft


Laser fiber array for singulating semiconductor wafers


An apparatus for cutting a substrate comprises first and second lasers, and first and second optical fibers each having an input end and an output end opposite to the input end, wherein the input ends of the first and second optical fibers are connected to the first and second lasers respectively. The output ends of the first and second optical fibers are movable relative to the substrate and are configured to image first and second laser beams onto the substrate simultaneously for cutting the substrate..

Wavelength locking and multiplexing of high-power semiconductor lasers


The disclosure relates to wavelength stabilization and wavelength multiplexing of multiple high-power multi-mode semiconductor lasers. The lasers are wavelength-stabilized in free space using multi-peak output reflectors to wavelength-lock their output at different reflection wavelength in dependence on operating conditions, to reduce output reflectivity required for locking and increase output power.
Lumentum Operations Llc


Burst-mode laser control circuit and the method thereof


A burst-mode laser control circuit and related methods thereof are disclosed. Using an apc loop with an additional burst-mode control circuit, and a switch in series with a diode and in parallel with the laser, a continuous-mode laser driver is enabled to operate in burst-mode by turning the switch on or off via external logic.
Source Photonics (chengdu) Co., Ltd.


Cooling disk lasers


A laser disk module includes a lasing element including an active gain medium, the lasing element including opposite top and bottom end surfaces, and a heat transfer element adjacent the bottom end surface, the heat transfer element including a ceramic material that defines a plurality of cooling structures. The heat transfer element is configured to transfer heat generated in the lasing element to a coolant in contact with the heat transfer element in the plurality of cooling structures during operation of the laser disk module..
Trumpf Laser Gmbh


Spectroscopy systems and methods using quantum cascade laser arrays with lenses


A spectroscopy system includes an array of quantum cascade lasers (qcls) that emits an array of non-coincident laser beams. A lens array coupled to the qcl array substantially collimates the laser beams, which propagate along parallel optical axes towards a sample.
Pendar Technologies, Llc


Use of lasers for treating and reversing fibrosis


A method for treating a subject having a diseased or atrophic state of fibrotic tissue, kidney disease and associated nerve endings, or for promoting tissue regeneration in muscle tissue is accomplished through exposing the tissue with a laser light having a wavelength of about 400 nm to about 700 nm, or more preferably having a wavelength of about 405 nm, about 532 nm, about 635 nm, or a combination thereof. Subsequent to exposure, mesenchymal stem cells can be administered to the subject.
The Board Of Trustees Of The University Of Illinois


Optical link protection using common modulation of multiple combined wavelengths


An optical transmitter may include one or more lasers configured to provide a primary optical signal having a primary wavelength and a secondary optical signal having a secondary wavelength to a modulator via corresponding first and second modulator inputs. The modulator may combine the primary and secondary optical signals into a combined optical signal and modulate, with an electrical signal, the combined optical signal to provide a modulated optical signal to an optical filter.

Solderless mounting for semiconductor lasers


A first contact surface of a semiconductor laser chip can be formed to a first target surface roughness and a second contact surface of a carrier mounting can be formed to a second target surface roughness. A first bond preparation layer comprising a first metal can optionally be applied to the formed first contact surface, and a second bond preparation layer comprising a second metal can optionally be applied to the formed second contact surface.

Holographic wristband


Disclosed is, among other things, a holographic wristband. It may comprise a wristband configured to emit two-dimensional (2d) or three-dimensional (3d) images.

Method and apparatus pertaining to a flexible wrapping material having laser-formed crease lines


One or more lasers (80, 100) form one or more crease lines (140, 150, 151) in a flexible wrapping material (60). The flexible wrapping material is then folded about the one or more crease lines when encapsulating an item to be wrapped within the flexible wrapping material.

Pharmaceutical composition for treating scars on the skin, and treating scars on the skin using same


The present invention relates to a pharmaceutical composition for treating scars on the skin, comprising a mixture of botulinum toxin and air. The mixture of botulinum toxin and air according to the present invention, when injected in the dermis, may temporarily removed the elasticity of the dermis and flatten out the depressed part of the scar, and thus enables elaborate intradermic resection and increases the therapeutic effects of lasers for treating pulsed dye laser or of fractional lasers.



Lasers topics:
  • Semiconductor
  • Photosensitive Drum
  • Device Control
  • Incident Light
  • Lens Array
  • Electrical Signal
  • Laser Array
  • Raman Amplifier
  • Amplification
  • Internal Combustion Engine
  • Enhancement
  • Processing Device
  • Processing Devices
  • Fiber Optic Cable
  • Fiber Optic


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