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Lasers patents


This page is updated frequently with new Lasers-related patent applications.

Date/App# patent app List of recent Lasers-related patents
 Laser apparatus and information acquisition apparatus using the same patent thumbnailLaser apparatus and information acquisition apparatus using the same
A laser apparatus includes an active medium, a first reflection portion, a second reflection portion, a first laser array including a plurality of semiconductor lasers, a third reflection portion configured to reflect at least part of light emitted from the first laser array and transmitted through the active medium, and a fourth reflection portion configured to transmit at least part of light emitted from the first laser array, and to reflect at least part of light reflected by the third reflection portion and transmitted through the active medium. The fourth reflection portion is disposed across the plurality of semiconductor lasers including respective light-emitting regions of the plurality of semiconductor lasers of the first laser array..
Canon Kabushiki Kaisha

 Densely arrayed waveguides with low cross-coupling patent thumbnailDensely arrayed waveguides with low cross-coupling
Described herein are lasers comprising an output port to output an optical signal, a plurality of waveguide segments forming an optical cavity length, and a resonant optical cavity comprising the optical cavity length, a gain medium included in the resonant optical cavity to amplify the optical signal, and a heating element disposed near at least two of the plurality of waveguide segments, the heating element controllable to adjust the phase of the optical signal by heating the waveguide segments. Described herein are optical devices comprising a first plurality of ports to output a plurality of optical signals, a second plurality of ports to receive the plurality of optical signals, and a plurality of coupling waveguides.

 Compact, coherent, high brightness light sources for the mid and far ir patent thumbnailCompact, coherent, high brightness light sources for the mid and far ir
Compact high brightness light sources for the mid and far ir spectral region, and exemplary applications are disclosed based on passively mode locked tm fiber comb lasers. In at least one embodiment the coherence of the comb sources is increased in a system utilizing an amplified single-frequency laser to pump the tm fiber comb laser.
Imra America, Inc.

 Discrimination of low power rf signals using phase modulation with injection locked lasers patent thumbnailDiscrimination of low power rf signals using phase modulation with injection locked lasers
An apparatus is provided for rf signal discrimination. A master laser of the apparatus is connected to an optical input of an optical phase modulator.
Government Of The United States, As Represented The Secretary Of The Air Force

 Laser guided and laser powered energy discharge device patent thumbnailLaser guided and laser powered energy discharge device
The present invention relates to a laser guided and powered directed energy weapon that combines two different lasers to accurately and efficiently deliver a high energy electromagnetic pulse (emp) to a target at long range. The method uses a high energy laser pulse with relatively long pulse duration focused in air to create a plasma ball which emits an intense emp.

 Hybrid silicon lasers on bulk silicon substrates patent thumbnailHybrid silicon lasers on bulk silicon substrates
Hybrid silicon lasers are provided including a bulk silicon substrate, a localized insulating layer that extends on at least a portion of the bulk silicon substrate, an optical waveguide structure on an upper surface of the localized insulating layer. The optical waveguide structure includes an optical waveguide including a silicon layer.

 Laser based frequency standards and their applications patent thumbnailLaser based frequency standards and their applications
Frequency standards based on mode-locked fiber lasers, fiber amplifiers and fiber-based ultra-broad bandwidth light sources, and applications of the same.. .
Imra America, Inc.

 High-gain operation of fiber lasers at long wavelengths patent thumbnailHigh-gain operation of fiber lasers at long wavelengths
A method of operating a tm:doped fiber amplifier including selecting a length of tm:doped optical fiber to be less than one hundred meters, doping the optical fiber with active ions at a doping level of greater than one percent, optically pumping the doped optical fiber with a first laser beam having a wavelength longer than the wavelength where a maximum absorption cross section is provided by the active ions, and creating a population inversion between two active ion energy levels with the first laser beam, the active ions providing a gain to a second laser beam.. .
Physical Sciences, Inc.

 Heterogeneous spectroscopic transceiving photonic integrated circuit sensor patent thumbnailHeterogeneous spectroscopic transceiving photonic integrated circuit sensor
Described herein are optical sensing devices for photonic integrated circuits (pics). A pic may comprise a plurality of waveguides formed in a silicon on insulator (soi) substrate, and a plurality of heterogeneous lasers, each laser formed from a silicon material of the soi substrate and to emit an output wavelength comprising an infrared wavelength.
Aurrion, Inc.

 Backlight unit and liquid crystal display device patent thumbnailBacklight unit and liquid crystal display device
A backlight unit has a light-guide plate and a light source optically coupled with the light-guide plate, with which light is input from a plane of the light-guide plate and white-light is output from the first principal plane of the light-guide plate. The light source has a plurality of blue light emitting diodes, red phosphor material excited by light from the blue light emitting diodes and emits red light, and a plurality of green semiconductor lasers having emission peaks at green light wavelengths..
Nichia Corporation


Tactical mobile surveillance system

A system for inspection of the undercarriage of a vehicle. The system may comprise a mobile unit or a stationary unit configured to fit in a space below the vehicle for gathering and transmitting data, images and or recordings, of the undercarriage of the vehicle.
Black Diamond Xtreme Engineering, Inc.


Automated product profiling apparatus and product slicing system using the same

An apparatus for acquiring a profile of a food product for use in subsequent processing of the food product includes a scanning area and one or more product drives for driving a product through the scanning area in a longitudinal direction. First line lasers project one first transverse laser line transversely to the longitudinal direction on the first surface and two first cameras arranged to capture different, overlapping first transverse image portions of the first transverse laser line.
Formax, Inc.


White light illuminant comprising quantum dot lasers and phosphors

A laser-based white light illuminant comprises a iii-nitride quantum dot laser diode and phosphors that convert the emitted laser light into white light. The laser light is emitted from an active region comprised of small quantum dots having a narrow size distribution, thereby providing narrower linewidths, decreased operating current density and increased peak efficiency.
Sandia Corporation


Operating vertical-cavity surface-emitting lasers

Methods, systems, and computer-readable media are provided for operating a vertical-cavity surface-emitting laser. Operating a vertical-cavity surface-emitting laser can include sending a signal to a driver to decrease an optical power of a vertical cavity surface emitting laser transmitter, and sending a signal to the driver associated with increasing the optical power by a particular amount in response to determining that the optical power is insufficient for reception by a receiver..
Hewlett-packard Development Company, L.p.


Process for fabrication of ytterbium doped optical fiber

The present invention provides a process for fabrication of ytterbium (yb) doped optical fiber through vapor phase doping technique. The method comprises deposition of al2o3 and yb2o3 in vapor phase simultaneously in combination with silica during formation of sintered core layer.
Department Of Electronics And Information Technology


Device and a 3d printing and manufacturing of materials using quantum cascade lasers

A 3d printer device utilizing at least one quantum cascade laser (qcl) image head having at least one beam focused in a focal plane of the device for building on a surface of the device a 3d model of a target object from a digital image. The inventive 3d printer is more compact in size due to the use of qcl image heads, which provides focused wavelengths of qcls matching the absorption properties in plastics for more efficient absorption of the radiant energy.


Device for preheating during welding and method

By the use of two lasers which are not mechanically connected to each other but the beams of which are then coupled to each other, it is possible to carry out preheating and remelting or melting in a very simple manner is provided.. .
Siemens Aktiengesellschaft


Wave based light beam delivery system

A device for projecting images from a video generating device such as a computer, television receiver, or similar device onto a screen or other surface is described in this invention. The device uses a rotating disk containing numerous lenses to direct a light beam from a laser or other light source towards the screen.


Semiconductor lasers

A semiconductor laser comprises a semiconductor laser chip, a conductive mount, an insulation block, and an electrode. The semiconductor laser chip and the insulation block are bonded to a surface of the conductive mount, and an upper surface of the electrode and the semiconductor laser chip are electrically connected.
Canare Electric Co., Ltd.


Three dimensional (3d) printing by volumetric addition through selective curing of a fluid matrix

An apparatus for building a three dimensional (3d) object using volumetric addition. The apparatus includes a print chamber containing a volume of a curable resin.
Disney Enterprises, Inc.


Maldi-tof mass spectrometers with delay time variations and related methods

Maldi-tof ms systems have solid state lasers and successive and varied delay times between ionization and acceleration (e.g. Extraction) to change focus masses during a single sample signal acquisition without requiring tuning of the ms by a user.
Biomérieux, Inc.


Nano-composite thermo-electric energy converter and fabrication method thereof

Briefly, the present disclosure relates to a nanocomposite thermoelectric energy converter comprising a composite thin film inorganic semiconductor having carbonized polymer nano-clusters and the net of polymer nano-fibers included within. The carbonized polymer nano-clusters and nano-fibers improve the thermoelectric figure of merit zt by increasing electrical conductivity and decreasing thermal conductivity.
Dillard University


Single-mode, distributed feedback interband cascade lasers

Single-mode, distributed feedback interband cascade lasers (icls) using distributed-feedback gratings (e.g., lateral bragg gratings) and methods of fabricating such icls are provided. The icls incorporate distributed-feedback gratings that are formed above the laser active region and adjacent the ridge waveguide (rwg) of the icl.
California Institute Of Technology


Low noise, high power, multiple-microresonator based laser

This invention provides ultra-low noise lasers with exceptional performance through the use of ultra-low loss microresonator based filters/reflectors including multiple (≧3) microresonator rings with different ring radii. The ultra-low loss microresonators provide a long effective laser cavity length enabling very narrow linewidth laser operation, with multiple (≧3) microresonators providing extremely high selectivity of the lasing mode over a very wide wavelength range; supporting single wavelength and widely tunable wavelength laser operation.


Wavelength division multiplexing of uncooled lasers with wavelength-common dispersive element

An example demultiplexer may include at least one dispersive element that is common to multiple wavelength channels. The demultiplexer may additionally include multiple field lenses positioned optically downstream from the at least one dispersive element, where a number of the field lenses is equal to a number of the wavelength channels.
Finisar Corporation


Short-wave infrared super-continuum lasers for detecting counterfeit or illicit drugs and pharmaceutical process control

A measurement system includes a light source generating an output optical beam using semiconductor sources generating an input beam, optical amplifiers outputting an intermediate beam, and optical fibers receiving the intermediate beam and forming a first optical beam. A nonlinear element broadens the output beam spectrum to at least 10 nm, the spectrum comprising a near-infrared wavelength of 700-2500 nm.
Omni Medsci, Inc.


Skin treatment with solid state laser

A method of treating mammalian tissue generates a first output beam of laser radiation of about 755 nm using an alexandrite laser. The first output beam is directed to a delivery device for directing a system output beam of laser radiation to a target region of mammalian tissue for non-therapeutic hair removal or tattoo removal.
Candela Corporation


Monitoring a multiplexed laser array in an optical communication system

Individual channels of a multiplexed laser array in a multi-channel optical transmitter are monitored at an output of an optical multiplexer. The monitoring may be used to confirm proper operation of each of the channels in the multiplexed laser array and/or to perform wavelength locking on each of the channels.
Applied Optoelectronics, Inc.


Device for generating laser radiation having a linear intensity distribution

The invention relates to a device for generating laser radiation (3) having a linear intensity distribution (11), comprising a plurality of laser light sources for generating laser radiation (3) and optical means for transforming laser radiation (3) exiting from the laser light sources into laser radiation (14) that has a linear intensity distribution (11) in a working plane (9), wherein the laser light sources are constructed as fundamental mode lasers and the device is designed such that each of the laser beams (3) exiting from the laser light sources does not overlap with itself.. .
Limo Patentverwaltung Gmbh & Co. Kg


Optical bench apparatus having integrated monitor photodetectors and monitoring optical power using same

Optical bench structure provides a platform for integrating optical transmitters, particularly vertical-cavity surface-emitting lasers (vcsels), with monitor photodetectors. A substrate with photodetectors on the front side is aligned with flip-chip bonding bumps so the emission of the transmitters is aligned with the monitor photodetectors and passes through the monitor photodetectors with a portion of the transmitted light absorbed by the monitor photodetectors.
Zephyr Photonics Inc.


Hybrid polarization-multiplexed coherent pic transmitters and receivers

Consistent with the present disclosure, active devices, such as lasers, optical amplifiers, and photodiodes, are integrated on a first substrate, and other optical devices, such as passive devices including polarization rotators and polarization beam combiners, are provided on a second substrate. An array of lenses is provided between the two substrates to provide a low loss optical connection from the first substrate to the second substrate.
Infinera Corporation


Non-saturating receiver design and clamping structure for high power laser based rangefinding instruments

A non-saturating receiver design and clamping structure for high power laser rangefinders of especial utility with respect to pumped, monoblock lasers. The receiver comprises a photodiode and a transimpedance amplifier having at least first and second stages.
Kama-tech (hk) Limited


Compact, thermally stable multi-laser engine

Various embodiments of a multi-laser system are disclosed. In some embodiments, the multi-laser system includes a plurality of lasers, a plurality of laser beams, a beam positioning system, a thermally stable enclosure, and a temperature controller.
Cvi Laser, Llc.


Optical mask plate and laser lift-off device

The present invention provides an optical mask plate and a laser lift-off device. The optical mask plate comprises at least one totally-transmissive region and a blocking region surrounding the totally-transmissive region.
Boe Technology Group Co., Ltd.


Reusable nitride wafer, making, and use thereof

Techniques for processing materials for manufacture of gallium-containing nitride substrates are disclosed. More specifically, techniques for fabricating and reusing large area substrates using a combination of processing techniques are disclosed.
Soraa, Inc.


Robotic work object cell calibration method

The robotic work object cell calibration method includes a work object or emitter. Initially, placing the work object is placed in a selected position on a fixture or work piece on the shop floor.


Semiconductor interband lasers and forming

A semiconductor interband laser that includes a first cladding layer formed using a first high-doped semiconductor material having a first refractive index/permittivity and a second cladding layer formed using a second high-doped semiconductor material having a second refractive index/permittivity. The laser also includes a waveguide core having a waveguide core refractive index/permittivity, the waveguide core is positioned between the first and the second cladding layers.
The Board Of Regents Of The University Of Oklahoma


Ultraviolet triply-optically-pumped atomic lasers (topal)

A continuous-wave (cw), ultraviolet triply-optically-pumped atomic laser (topal) is disclosed. The inventive laser device includes a laser active media comprising a mixture of a neutral atomic vapor and one or more buffer gases.


Reconfigurable electromagnetic surface of pixelated metal patches

A reconfigurable electro-magnetic tile includes a laser layer including a plurality of lasers, and a pixelated surface comprising a plurality of metal patches and a plurality of switches, wherein each respective switch of the plurality of switches is in a gap between a first respective metal patch and a second respective metal patch, wherein each respective switch is optically coupled to at least one respective laser of the plurality of lasers, and wherein each switch of the plurality of switches comprises a phase change material.. .
Hrl Laboratories Llc


Optical communication systems and methods

Systems and methods presented herein provide for optical communications with a remotely located laser. In one embodiment, a communication system includes an optical link and a communication hub comprising at least two lasers optically coupled to a first end of the optical link, the communication hub further comprising an optical multiplexer operable to multiplex light from the lasers and to propagate the multiplexed light along the optical link.


Mode-locked multi-mode fiber laser pulse source

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.


Method and apparatus including improved vertical-cavity surface-emitting lasers

Vcsels and methods having improved characteristics. In some embodiments, these include a semiconductor substrate; a vertical-cavity surface-emitting laser (vcsel) on the substrate; a first electrical contact formed on the vcsel; a second electrical contact formed on the substrate, wherein the vcsel includes: a first resonating cavity having first and second mirrors, at least one of which partially transmits light incident on that mirror, wherein the first second mirrors are electrically conductive.
Vixar Inc.


Optical signal processing with modelocked lasers

The invention relates to scanning pulsed laser systems for optical imaging. Coherent dual scanning laser systems (cdsl) are disclosed and some applications thereof.
Imra America, Inc.


Monolithic silicon lasers

An apparatus comprising a substrate having a silicon waveguide thereon. The apparatus also comprises a semiconductor layer with a direct band gap.
Alcatel-lucent Usa, Inc.


Integrated optoelectronic modules

A beam generating device includes a semiconductor substrate, having an optical passband. A first array of vertical-cavity surface-emitting lasers (vcsels) is formed on a first face of the semiconductor substrate and are configured to emit respective laser beams through the substrate at a wavelength within the passband.
Apple Inc.


Quantum-dot laser diode

Aspects of the present disclosure relate to the field of laser technology, specifically semiconductor lasers, and to novel biomedical applications of such lasers, including novel methods of photodynamic therapy. Exemplary embodiments of the present disclosure include a semiconductor laser diode having an active region having a gain medium with one or more ingaas/inas quantum dot layers; and wherein the laser diode can be arranged in operation to emit laser light having a central wavelength within spectral range of wave lengths.
University Of Dundee


Symmetric three-laser resonator fiber optic gyroscope

A resonator fiber optic gyroscope comprises a master laser that emits a reference optical signal, a first slave laser that emits a clockwise optical signal, and a second slave laser that emits a counter-clockwise optical signal. A resonator ring cavity in optical communication with the first slave laser and second slave laser is configured to receive the optical signals from the slave lasers without receiving the reference optical signal.
Honeywell International Inc.


High power laser iris cutters

There are provided using deuterium oxide as a media for transmitting high power lasers to perform laser operations, such as cutting, boring and drilling, a target material. High power laser beams are transmitted through a deuterium oxide beam path to a target material, including material in a pressure containment vessel..
Foro Energy Inc.


Optical communication circuits

Various apparatuses, circuits, systems, and methods for optical communication are disclosed. In some implementations an optical transmitter includes an optical data port configured to engage an optical fiber.
Xilinx, Inc.


Managing thermal budget in annealing of substrates

A method and apparatus are provided for treating a substrate. The substrate is positioned on a support in a thermal treatment chamber.
Applied Materials, Inc.


Delayed optical logic gates for boolean algebra

A system, method, and apparatus for delayed optical logic gates based on slow light and enhanced nondegenerate four-wave mixing processes, where a single or multiple delayed optical routers are utilized for dark resonance interactions in which two-color lasers interact with a three-level nonlinear optical medium comprised of two ground states and one excited state through the nondegenerate four-wave mixing processes. The delayed optical logic mechanism is based on combination of single or multiple dark resonance-induced two-photon coherence conversion via slow light phenomenon.
Inha Industry Partnership Institute


Optical communication module and producing the same

An optical communication module includes a plurality of semiconductor lasers that emit optical signals with different wavelengths, a plurality of first mounts each including a first mounting surface on which a corresponding one of the semiconductor lasers is mounted and a first side surface that intersects with the first mounting surface, a second mount including a second mounting surface on which a lens array that collimates an optical signal emitted from a corresponding one of the plurality of semiconductor lasers and a multiplexing optical system that multiplexes the plurality of optical signals that have been collimated by the lens array and a second side surface that intersects with the second mounting surface. Each of the first mounts is fixed to the second mount in a state where a corresponding one of the semiconductor lasers is aligned with the lens array and the first side surface abuts the second side surface..
Hitachi Metals, Ltd.


Optical communication module

An optical communication module includes a plurality of semiconductor lasers that emit optical signals with different wavelengths, a multiplexing optical system including a plurality of optical filters used for multiplexing the optical signals, each of which has been emitted from a corresponding one of the plurality of semiconductor lasers, and a substrate on which the optical filters are provided, and a plurality of lenses, each of the lenses being joined to a corresponding one of the plurality of optical filters to condense or collimate an optical signal emitted from a corresponding one of the semiconductor lasers and thereby enable the light signal to enter the optical filter. The plurality of lenses are independent from one another and have a different linear expansion ratio from that of the substrate.
Hitachi Metals, Ltd.


Light-based position control of a manual picking process

A position control system for a manual picking workstation having a plurality of component bins includes a light device and a process controller. The light device projects a light beam along a plane.
Fives Inc.


Modular cart

A modular cart for transporting and securing femtosecond lasers and other highly sensitive equipment to medical facilities by truck transit and within medical facilities by rolling the modular cart is disclosed. The modular cart includes a cart base member with rollers, a sub plate attached to the top portion of the cart base member, a control box attached to a top end portion of the cart base member, and an adaptable interface plate attached thereto the top portion of the sub plate for selectively receiving and securing highly sensitive equipment.
Sightpath Medical, Llc


Medical equipment cart having a rotary attachment

A cart for transporting and securing ophthalmological lasers and other highly sensitive equipment to medical facilities by a vehicle such as a truck, and within medical facilities by rolling the cart is disclosed. The cart includes a cart base member with a mounting plate attached to the top portion of the cart base member, a locking mechanism attached to the mounting plate, and a circular plate, rotary swivel bearing and roller plate contained between the cart base member and the mounting plate.
Sightpath Medical, Llc


Diffractive optical elements for transformation of modes in lasers

Spatial mode conversion modules are described, with the capability of efficiently transforming a given optical beam profile, at one plane in space into another well-defined optical beam profile at a different plane in space, whose detailed spatial features and symmetry properties can, in general, differ significantly. The modules are comprised of passive, high-efficiency, low-loss diffractive optical elements, combined with fourier transform optics.
Lawrence Livermore National Security, Llc


Laser centering tool for surface areas

A laser centering tool for surface areas used to find the center point of a surface. The laser centering tool uses single or multiple laser sources to project a plurality of lines on a horizontal or vertical surface.


High-power, phased-locked, laser arrays

High-power, phased-locked, laser arrays as disclosed herein utilize a system of optical elements that may be external to the laser oscillator array. Such an external optical system may achieve mutually coherent operation of all the emitters in a laser array, and coherent combination of the output of all the lasers in the array into a single beam.
Pd-ld, Inc.


Index-coupled distributed-feedback semiconductor quantum cascade lasers fabricated without epitaxial regrowth

Quantum cascade (qc) lasers and methods of fabricating such qc lasers are provided. The qc lasers incorporate a dfb grating without requiring the use of relying on epitaxial regrowth processes.
California Institute Of Technology


Hybrid waveguide lasers and methods for fabricating hybrid waveguide lasers

The present disclosure relates to a method for integrating a sub-micron iii-v waveguide laser on a semiconductor photonics platform as well as to a corresponding device/system. The method comprises providing on a semiconductor substrate an electrically insulating layer, etching a trench having a width in the range between 50 nm and 800 nm through the electrically insulating layer, thereby locally exposing the silicon substrate, providing a iii-v layer stack in the trench by local epitaxial growth to form a channel waveguide, and providing a light confinement element for confining radiation in the local-epitaxial-grown channel waveguide..
Imec Vzw


Unidirectional ring lasers

A laser includes an active ring, a passive waveguide, and a reflector. The active ring is to generate light.
Hewlett-packard Development Company, L.p.


Method, system and hybrid optical and electrical pumping of semiconductor lasers and leds for improved reliability at high temperatures

A method, system and an apparatus for hybrid optical and electrical pumping of semiconductor lasers and light-emitting diodes (leds) improves reliability at high operating temperatures. The semiconductor laser or led is biased via optical pumping and a relatively small electrical modulation current modulates the laser.
Zephyr Photonics Inc.


Bidirectional long cavity semiconductor laser for improved power and efficiency

The invention relates to bi-directional long-cavity semiconductor lasers for high power applications having two ar coated facets (2ar) to provide an un-folded cavity with enhanced output power. The lasers exhibit more uniform photon and carrier density distributions along the cavity than conventional uni-directional high-power lasers, enabling longer lasers with greater output power and lasing efficiency due to reduced longitudinal hole burning.
Jds Uniphase Corporation


Laser annealing apparatus and laser annealing method

Provided is a laser annealing apparatus 1 for heat-treating a surface of a substrate 30 comprising: a pulse oscillation laser source 10 which generates a pulse laser with gentle rise time and long pulse width; a continuous wave laser source 20 which generates a near-infrared laser for assisting annealing; optical systems 12, 22 which shape and guide beams 15, 25 of the two types of lasers respectively so as to irradiate the surface of the substrate 30 therewith; and a moving device 3 which moves the substrate 30 relatively to the laser beams 15, 25 to allow scanning of the combined irradiation of the two types of laser beams. According to this apparatus, deep activation of impurities can be performed in a thick semiconductor substrate with large heat capacity while securing sufficient light penetration depth and thermal diffusion length therefor..


Strike zone detection device

The present invention provides a sports training device having at least two stanchions, wherein the stanchions are spaced a horizontal distance apart from each other and wherein the stanchions telescope vertically and are portable; a plurality of horizontal dividers, wherein the plurality of horizontal dividers span between the at least two stanchions; and a plurality of vertical dividers, wherein the plurality of vertical dividers depend from at least one of the plurality of horizontal dividers and wherein the plurality of horizontal dividers and the plurality of vertical dividers overlap to define a plurality of zones. Also provided is an embodiment in which lasers are used as the horizontal and vertical dividers..


Near infrared photonic prostatoscopy analyzer

A rectal near infrared (nir) scanning polarization imaging system uses nir photonic prostatoscopy analyzer (nirppa) for prostate cancer detection using light. The nirppa consists of a portable rectal nir scanning polarization imaging unit and an optical fiber-based rectal probe capable of recording sets of 2d images of a prostate through rectum at different wavelengths and depths and obtaining a three dimensional (3d) image of the prostate and 3d locations of abnormal tissue inside the prostate.


Hybrid optical transmitter and/or receiver structure

A device may include a substrate. The device may include a carrier mounted to the substrate.
Infinera Corporation


Laser device for projecting a structured light pattern onto a scene

The present invention relates to a laser device (10) for projecting a structured light pattern (9) onto a scene (15). The device is formed of several arrays (1) of semiconductor lasers (2), each array (1) comprising an irregular distribution of emission areas (2a) of the semiconductor lasers (2).
Koninklijke Philips N.v.


Method and system for robust and extended illumination waveforms for depth sensing in 3d imaging

The methods and systems disclosed herein improve upon previous 3d imaging techniques by making use of a longer illumination pulse to obtain the same or nearly the same range resolution as can be achieved by using a much shorter, conventional laser pulse. For example, a longer illumination pulse can be produced by one or more q-switched lasers that produce, for example, 5, 10, 20 ns or longer pulses.
Tetravue, Inc.


External cavity system generating broadly tunable terahertz radiation in mid-infrared quantum cascade lasers

A broadly tunable terahertz source constructed as an external cavity system using a difference-frequency generation quantum cascade laser source. The external cavity system includes an external diffraction grating configured to tune and reflect mid-infrared emission at a first wavelength.


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


Stable microwave-frequency source based on cascaded brillouin lasers

A microwave-frequency source, generating an output electrical signal at an output frequency fm, comprises a pump laser source, an optical resonator, and a photodetector. Free spectral range vfsr of the optical resonator equals an integer submultiple of a brillouin shift frequency vb of the optical resonator (i.e., vb=mvfsr).
California Institute Of Technology


Iii-v photonic integration on silicon

Photonic integrated circuits on silicon are disclosed. By bonding a wafer of hi-v material as an active region to silicon and removing the substrate, the lasers, amplifiers, modulators, and other devices can be processed using standard photolithographic techniques on the silicon substrate.
The Regents Of The University Of California


Near-infrared lasers for non-invasive monitoring of glucose, ketones, hba1c, and other blood constituents

Non-invasive monitoring of blood constituents such as glucose, ketones, or hemoglobin a1c may be accomplished using near-infrared or short-wave infrared (swir) light sources through absorbance, diffuse reflection, or transmission spectroscopy. As an example, hydro-carbon related substances such as glucose or ketones have distinct spectral features in the swir between approximately 1500 and 2500 nm.
Omni Medsci. Inc.


Short-wave infrared super-continuum lasers for early detection of dental caries

A system and method for using near-infrared or short-wave infrared (swir) sources such as lamps, thermal sources, led's, laser diodes, super-luminescent laser diodes, and super-continuum light sources for early detection of dental caries measure transmission and/or reflectance. In the swir wavelength range, solid, intact teeth may have a low reflectance or high transmission with very few spectral features while a carious region exhibits more scattering, so the reflectance increases in amplitude.
Omni Medsci, Inc.


Led pumped laser device and use

The present invention provides an apparatus and method for pumping solid-state lasers and amplifiers. More specifically, to a method and apparatus for pumping solid-state lasers and amplifiers using light emitting diode (led) arrays.
Colorado School Of Mines


Compounds capable of undergoing symmetry breaking intramolecular charge transfer in a polarizing medium and organic photovoltaic devices comprising the same

The present disclosure generally relates to chromophoric compounds that combine strong absorption of light at visible wavelengths with the ability to undergo symmetry-breaking intramolecular charge transfer (ict), and their use for the generation of free carriers in organic photovoltaic cells (opvs) and electric-field-stabilized geminate polaron pairs. The present disclosure also relates to the synthesis of such compounds, methods of manufacture, and applications in photovoltaic systems and organic lasers..


Light source module for stereoscopic display, imaging device for stereoscopic display and stereoscopic display system

A light source module for stereoscopic display includes multi-primary color lasers which output the light with the same polarization direction. Respective lasers are divided into two groups according to the wavelengths of the output light.
Hisense Hiview Tech. Co., Ltd.


Spatially coded structured light generator

A spatially coded structured light is generated by an array of laser diodes (1) in order to perform structured light triangulation. The laser diodes (1a-c) are vcsel, where the light is emitted in the direction perpendicular to the semiconductor wafer surface.
Iee International Electronics & Engineering S.a.


Optical communication module

An optical communication module includes: a plurality of semiconductor lasers which emit optical signals each having different wavelengths; a plurality of driver ics which drive each of the plurality of semiconductor lasers; and a substrate on which both of the semiconductor lasers and the driver ics are mounted. The semiconductor lasers are mounted on a first surface of the substrate and the driver ics are mounted on a second surface of the substrate opposite to the first surface..
Hitachi Metals, Ltd.


Optically-actuated mechanical devices

According to embodiments, an optically-actuated mechanical device comprises at least one deformable section formed of: an element including an intrinsic stress differential or gradient, the stress tending to urge deformation of one portion relative to another portion; and an optically-sensitive material which is configured to (i) initially prevent deformation of the device, and (ii) upon sufficient heating by absorbing optical energy allows the element to deform. The devices may be incorporated into various devices and apparatuses for select, non-contact actuation using only optical energy, for example, via light, from one or more lasers.
U.s. Army Research Laboratory Attn: Rdrl-loc-i


Systems and methods for patterning using a laser

The present invention generally relates to a surface treatment of fabric with a laser and, more specifically, to a system and method for generating a pattern used to process a surface of a fabric through laser irradiation and the fabric resulting from such treatment. The present invention provides small laser spot sizes while operating a laser at large field size by 1) using a laser system with post-objective scanning architecture; 2) using multiple lasers across the width of a fabric roll; and/or 3) increasing the size and weight of the laser scanning mirrors.
Revolaze, Llc


Method and coating a substrate utilizing multiple lasers while increasing quantum yield

A method and an apparatus are disclosed for coating a substrate with a coating, or a coating powder. The substrate is divided into a number of target fields which are scanned by a plurality of lasers after the target fields have been pre-heated by a separate laser.
Photofusion Technologies Limited


Visual disruption network and system, method, and computer program product thereof

Aspects of the disclosed subject matter involve an airborne-based network for implementing a laser-based visual disruption countermeasure scan pattern system, method, and computer program product. The scan pattern can be comprised of a plurality of lasers each with their own scan pattern and may be used to disrupt an optical system of a weapon or an individual.


Cataract removal using ultra-short pulse lasers

A system and method of replacing a lens to treat a cataract is disclosed. Cataractous tissue is ablated via a multi-photon process using focused, ultra-short laser pulses.


Amortization of expensive optical components

A laser system includes an array of lasers that emit light at a number of different, fixed wavelengths. A group of optical transport systems connect to the laser system.


Vertical cavity surface emitting lasers with silicon-on-insulator high contrast grating

A surface emitting laser apparatus is formed using a patterned silicon-on-insulator (soi)-like substrate which is patterned with a buried sub-wavelength high contrast grating and adapted for bonding of a half-vcsel device containing at least an active region and an upper mirror, to create a vcsel. The wavelength of the vcsel, or any individual vcsel within an array of vcsel devices, can be set in response to changing hcg characteristics of the lower mirror in the soi-like substrate, or in the region above the lower mirror within the half-vcsel.


Vertical-cavity surface-emitting lasers with non-periodic gratings

Various embodiments of the present invention are directed to surface-emitting lasers with the cavity including at least one single-layer, non-periodic, sub-wavelength grating. In one embodiment, a surface-emitting laser comprises a grating layer configured with a non-periodic, sub-wavelength grating, a reflective layer, and a light-emitting layer disposed between the grating layer and the reflector.


Systems and methods for stabilized stimulated brillouin scattering lasers with ultra-low phase noise

Systems and methods for stabilized stimulated brillouin scattering lasers with ultra-low phase noise are provided. In one embodiment, a method for producing a stimulated brillouin scattering (sbs) beam comprises: generating laser light from a tunable laser source; splitting the laser light into a first light beam and a second light beam; creating a phase modulated light beam by applying a phase modulation to the first light beam; locking a frequency of the laser light to a frequency of a ring cavity using the phase modulated light beam and a pound-drever-hall servo loop coupled to the tunable laser source; coupling the second light beam into the ring cavity in a direction of travel opposite to that of the phase modulated light beam; generating a stimulated brillouin scattering light beam in the ring cavity from the second light beam; and outputting the stimulated brillouin scattering light beam..


Regenerative optical amplifier for short pulsed lasers, a laser source and a laser workstation

This invention provides a solution for operating a regenerative amplifier using a single electro-optical device, such as a pockels cell. An efficient cavity geometry of a regenerative amplifier is provided for enabling pulse selection, coupling and releasing to an output by operating a single pockels cell unit placed essentially in the middle of the optical cavity, between two polarizers, whereas a first polarizer is used for release of an amplified pulse and a second polarizer is used for injection of seed pulses and release of at least one of waste amplified pulses and seed pulses.


Lithographic apparatus

A radiation source for a lithographic apparatus uses a plurality of fiber lasers to ignite a fuel droplet at an ignition location to generate euv radiation. The fiber lasers may be provided to emit parallel to an optical axis and a telescopic optical system is provided to focus the lasers at the ignition location, or the lasers may be directed towards the optical axis with a final focus lens being used to reduce beam waist.


Microscope and a examining a sample using a microscope

A microscope, in particular a confocal microscope, has one or more lasers for generating an illumination light for a sample and has a detection device for detected signals from the sample. The detection device includes multiple adjustable spectral detection channels for the detection of predefinable different wavelength regions, and is configured and refined in the interest of particularly versatile utilization in consideration of a wide variety of phenomena, with particularly good separation of the phenomena in the context of investigation, in such a way that multiple temporal detection windows are respectively settable for the spectral detection channels..


High efficiency vertical optical coupler using sub-wavelength high contrast grating

A vertical optical coupler which redirects light transmission in response to the interaction between a sub-wavelength high contrast grating (hcg) having a plurality of spaced apart segments of grating material which is optically coupled to a waveguide. For a selected set of material, grating geometry, gaps and spacing, the light directed at a normal incidence into the optical coupler is angularly displaced in traveling in the optical waveguide, while light directed along the optical waveguide is angularly displaced in being output at normal incidence from the optical coupler.


Visual disruption system, method, and computer program product

Aspects of the disclosed subject matter involve airborne-based systems, methods, and computer program products for optimizing a laser-based visual disruption countermeasure scan pattern. The scan pattern can be comprised of a plurality of lasers each with their own scan pattern and may be used to disrupt an optical system of a weapon or an individual.


Optical signal conversion device and method thereof

The present invention relates to a device and a method for conversion from optical double-sideband modulation signals to optical single-sideband modulation signals. Period-one nonlinear dynamics of semiconductor lasers is utilized to achieve such optical signal conversion.
National Cheng Kung University


System and controlling multiple lasers using a graphical user interface

A computer-implemented method for controlling a plurality of electromagnetic energy sources is disclosed. Instructions are executed on a processor to display on a computer-human interface display device a user interface region.
Biolase, Inc.


Non-saturating receiver design and clamping structure for high power laser based rangefinding instruments

A non-saturating receiver design and clamping structure for high power laser rangefinders of especial utility with respect to pumped, monoblock lasers. The receiver comprises a photodiode and a transimpedance amplifier having at least first and second stages.
Laser Technology, Inc.


Systems and methods for addressing one or more sensors along a cable

A sensor interrogation unit in one embodiment includes a control module, a reading module, and a determination module. The control module is configured to control one or more lasers to provide a pulsed signal to at least one sensor.
General Electric Company


System, 3d printing

The present invention is directed to three-dimensional printing techniques, methodologies, systems and apparatus to facilitate increased print speed. Through the use of multiple nozzles on a print head printing line by line, more material is deposited.


Anisotropic beam pumping of a kerr lens modelocked laser

Apparatus and methods for anisotropic pumping of a kerr lens modelocked laser. Direct diode laser pumping of an ultrafast kerr lens modelocked laser oscillator is accomplished.
Km Labs Inc.

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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