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




Date/App# patent app List of recent Lasers-related patents
02/04/16
20160033728 
 Hybrid polarization-multiplexed coherent pic transmitters and receivers patent thumbnailnew patent 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


02/04/16
20160033627 
 Non-saturating receiver design and clamping structure for high power laser based rangefinding instruments patent thumbnailnew patent 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


01/28/16
20160028210 
 Compact, thermally stable multi-laser engine patent thumbnailCompact, 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.


01/28/16
20160023305 
 Optical mask plate and laser lift-off device patent thumbnailOptical 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.


01/21/16
20160020284 
 Reusable nitride wafer,  making, and use thereof patent thumbnailReusable 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.


01/21/16
20160016317 
 Robotic work object cell calibration method patent thumbnailRobotic 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.

01/14/16
20160013619 
 Semiconductor interband lasers and  forming patent thumbnailSemiconductor 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


01/14/16
20160013608 
 Ultraviolet triply-optically-pumped atomic lasers (topal) patent thumbnailUltraviolet 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.

01/14/16
20160013549 
 Reconfigurable electromagnetic surface of pixelated metal patches patent thumbnailReconfigurable 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


01/07/16
20160006507 
 Optical communication systems and methods patent thumbnailOptical 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.

01/07/16
20160006208 

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.


12/31/15
20150380901 

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.


12/31/15
20150380892 

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.


12/31/15
20150378100 

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.


12/31/15
20150377696 

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.


12/31/15
20150375194 

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


12/24/15
20150369605 

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.


12/17/15
20150361750 

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.


12/10/15
20150358085 

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.


12/10/15
20150357215 

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.


12/03/15
20150346581 

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


12/03/15
20150346442 

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.


12/03/15
20150346432 

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.


12/03/15
20150346383 

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.


12/03/15
20150344054 

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


12/03/15
20150344051 

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


11/26/15
20150340835 

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


11/26/15
20150338207 

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.

11/19/15
20150333484 

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.


11/19/15
20150333482 

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


11/19/15
20150333481 

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


11/19/15
20150333479 

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.


11/19/15
20150333477 

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.


11/19/15
20150333472 

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


11/19/15
20150332923 

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..

11/12/15
20150321062 

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..

11/12/15
20150320319 

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.

11/05/15
20150318952 

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


11/05/15
20150316368 

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.


10/29/15
20150312554 

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.


10/29/15
20150311665 

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.
ω1−ω2


10/29/15
20150311664 

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


10/29/15
20150311662 

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


10/29/15
20150309254 

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


10/29/15
20150305658 

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.


10/29/15
20150305627 

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.


10/22/15
20150303641 

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


10/22/15
20150303377 

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..

10/22/15
20150301346 

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.


10/22/15
20150301181 

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.


10/22/15
20150300614 

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.


10/22/15
20150298322 

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


10/22/15
20150298253 

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


10/22/15
20150298166 

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


10/15/15
20150293212 

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.

10/15/15
20150290030 

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.

10/08/15
20150288479 

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.

10/08/15
20150288146 

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.

10/08/15
20150288145 

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.

10/08/15
20150288135 

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..

10/08/15
20150288134 

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.

10/08/15
20150286145 

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.

10/08/15
20150286040 

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..

10/08/15
20150286006 

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.

10/08/15
20150285902 

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.

10/01/15
20150280830 

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


10/01/15
20150277738 

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.


10/01/15
20150276921 

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.


10/01/15
20150276686 

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


10/01/15
20150273769 

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.

09/24/15
20150270681 

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.


09/24/15
20150268463 

Light scanning device and image forming apparatus with the same


Respective first semiconductor lasers 44a and 44b and respective second semiconductor lasers 45a and 45b are arranged on a drive substrate 46 (yz plane) such that the emission directions of light beams l1 to l4 of the respective first semiconductor lasers 44a and 44b and the respective second semiconductor lasers 45a and 45b are perpendicular to the yz plane. On the yz plane, the respective first semiconductor lasers 44a and 44b and the respective second semiconductor lasers 45a and 45b are divided to two mutually different lines y1 and y2 in the lateral direction perpendicular to the rotation axis of a polygonal mirror 42, and the respective first semiconductor lasers 44a and 44b and the respective second semiconductor lasers 45a and 45b are arranged on respective different lines z1 to z4 in the vertical direction as the rotation axis direction of the polygonal mirror 42..
Sharp Kabushiki Kaisha


09/24/15
20150268344 

Radar systems with dual fiber coupled lasers


Laser radar systems include a pentaprism configured to scan a measurement beam with respect to a target surface. A focusing optical assembly includes a corner cube that is used to adjust measurement beam focus.
Nikon Corporation


09/24/15
20150267897 

Light emitting diode illumination system


The present invention provides a light engine having four light sources. A combination of collimators, bandpass filters, dichroic mirrors, and other elements is operative to direct light from the light sources onto a main optical axis from where it may be focused into a light guide for transport to an instrument or device.
Lumencor, Inc.


09/24/15
20150265847 

More dermal retraction with intersecting electromagnetic radiation pathways


A method and device for stimulating human dermal tissue retraction and collagen and elastin production is provided. One or more lasers or other electromagnetic radiation devices produce at least two output beams (split or independent beams) that can be directed to deliver electromagnetic energy to a desired subsurface depth of dermal tissue, thereby disrupting the same, without causing excessive damage to the adjacent epidermis, subcutaneous fatty tissue, or blood vessels of the skin..

09/17/15
20150263481 

Algorithms for rapid gating of seed suspendable pulsed fiber laser amplifiers


Pulsed fiber lasers that amplify seed laser pulses include pump laser drivers that produce simmer currents during periods in which the seed pulse is suspended, and forward currents associated with steady state pulse amplification. By suitable selection of simmer currents, initiation of a series of seed pulses produces pulse-to-pulse output powers with suitable power variation..
Nlight Photonics Corporation


09/17/15
20150260521 

Rotation-sensitive semiconductor ring laser device using the nonlinear sagnac effect


Method and apparatus embody a rotation sensor including one or more ring lasers designed to utilize a nonlinear sagnac effect, a passive waveguide arrangement, and a photodetector arrangement to receive the outcoupled light and to detect rotation of the sensor; wherein these components are arranged into a monolithically integrated optoelectronic integrated circuit on a single substrate. The method and apparatus can include seeding a stable, rotation-insensitive, strong (driving) wave using a single-frequency edge emitting laser monolithically integrated on the same substrate..
Stc.unm


09/17/15
20150260520 

Fiber resonator gyroscope with low round trip loss and high output power


One embodiment is directed to a resonator fiber optic gyroscope (rfog). The optical fiber resonator includes an optical fiber, one or more optical filters that suppresses the noise light in the resonator, one or more variable optical attenuators (voas) that can adjust the loss of the resonator with fast response, and one or more optical gain elements that provide amplification of light to offset part of the losses of the resonator.
Honeywell International Inc.


09/17/15
20150258694 

Laser centering of robotic arm


In a system and method of working tubes coupled to a tubesheet having a number of holes, wherein each hole in fluid communication with one of the tubes, an end-effector is positioned by a robot in coarse or rough alignment with a first hole in the tubesheet. Via lasers positioned on the end-effector, laser spots are formed on a surface of the tubesheet adjacent the first hole.
Corestar International Corporation


09/10/15
20150256256 

Communication over multimode and single mode fiber


An example embodiment includes a system for communicating an optical signal. The system includes an optical transmitter and an optical receiver.
Finisar Corporation


09/10/15
20150255953 

External cavity laser with single mode-hop-free tuning


External cavity lasers with single mode-hop-free tuning are generally described. In an example, an external cavity tunable laser system includes an external cavity, a substrate, a chirped grating reflector, and a tunable filter.
Santec Corporation


09/10/15
20150252974 

Enhanced illumination efficacy of white color from green laser and magenta phosphor


Techniques related to generating daylight-like light from green laser and magenta phosphor are disclosed. Such light may be used in headlights of vehicles.

09/10/15
20150251481 

Color laser marking


A method for preparing a color laser marked article using three infrared lasers l-1, l-2 and l-3 having respectively a laser emission wavelength of λ(l-1), λ(l-2) and λ(l-3) includes the steps of laser marking with the infrared laser l-1 a first color laser markable layer including an infrared dye ir-1 having an absorption maximum in the infrared region λmax(ir-1); laser marking with the infrared laser l-2 a second color laser markable layer including an infrared dye ir-2 having an absorption maximum in the infrared region λmax(ir-2); laser marking with the infrared laser l-3 a third color laser markable layer including an infrared dye ir-3 having an absorption maximum in the infrared region λmax(ir-3); and at least partially exposing the color laser markable article to light having a wavelength between 520 nm and 700 nm, wherein, the laser emission wavelengths satisfy the condition of: λ(l-1)>λ(l-2)>λ(l-3); the infrared red dye absorption maxima satisfy the condition of: λmax(ir-1)>λmax(ir-2)>λmax(ir-3); and the light emitted by the infrared laser l-1 passes, in order, through the third and second color laser markable layer before exposing the first color laser markable layer.. .
Agfa-gevaert


09/03/15
20150249317 

Laser 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.


09/03/15
20150249316 

Arbitrary pulse shaping in high peak power fiber lasers


Seeder for use with a fiber laser for generating an arbitrary shaped pulse, comprising an amplified spontaneous emission (ase) source, a spectral filter and an arbitrary waveform generator (awg) modulator, the ase source for generating a continuous wave (cw) broadband pulse, the spectral filter being coupled with the ase source for narrowing the cw broadband pulse, and the awg modulator being coupled with the spectral filter for shaping the narrowed cw broadband pulse to an arbitrary pulse shape.. .

08/27/15
20150244331 

Microwave power amplification apparatus and method thereof


Period-one nonlinear dynamics of semiconductor lasers are utilized to provide an apparatus for photonic microwave power amplification in radio-over-fiber links through optical modulation depth improvement. The microwave power amplification apparatus includes a microwave-modulated optical signal generation module and a microwave power amplification module.
National Cheng Kung University


08/27/15
20150244150 

Method and apparatus to reduce noise caused by mode hopping in external cavity lasers


An external cavity laser and method for operating same are disclosed. The external cavity laser includes a gain chip, a grating, an actuator and actuator driver.
Agilent Technologies, Inc.


08/27/15
20150244145 

Methods for determining optical power, for power normalizing laser measurements, and for stabilizing power of lasers via compliance voltage sensing


A method is disclosed for power normalization of spectroscopic signatures obtained from laser based chemical sensors that employs the compliance voltage across a quantum cascade laser device within an external cavity laser. The method obviates the need for a dedicated optical detector used specifically for power normalization purposes.
Battelle Memorial Institute


08/27/15
20150244144 

Tunable semiconductor lasers


A tunable semiconductor laser having, in one embodiment, a higher bias voltage end, a lower bias voltage end, and an optically active gain region comprising a band-gap configured to emit light at an emission wavelength that is tunable when an electric field is generated across the optically active gain region by applying a bias voltage thereto, an electron quantum well (qw) layer positioned closer to the higher bias voltage end than the lower voltage bias end, and a hole qw layer positioned closer to the lower bias voltage end than the higher bias voltage end and comprising a type-ii band alignment with the electron qw layer such that the band-gap is determined by an energy difference between a ground electron state in the electron qw layer and a ground hole state in the hole qw layer, wherein the emission wavelength is redshifted upon an increase in a bias voltage applied to the optically active gain region.. .
Board Of Regents University Of Oklahoma


08/27/15
20150244140 

Air-cooled gas lasers with heat transfer resonator optics and associated systems and methods


Embodiments of an air-cooled gas laser with heat transfer resonator optics are disclosed herein. A laser configured in accordance with one embodiment includes resonator optics having an optical element, a first heat sink element in surface-to-surface contact with a first side surface of the optical element, a second heat sink element in surface-to-surface contact with a second side surface of the optical element, and a carrier member carrying the optical element and the first heat sink element, and including a forward facing surface in surface-to-surface contact with the backside surface of the optical element.
Universal Laser Systems, Inc.


08/27/15
20150244139 

Air-cooled gas lasers and associated systems and methods


Embodiments of an air-cooled gas laser are disclosed herein. A laser configured in accordance with one embodiment includes a laser superstructure, an optical assembly, and an elongated thermal decoupler member having a first end portion fixedly coupled to the optical assembly and a second end portion fixedly coupled to the laser superstructure.
Universal Laser Systems, Inc.


08/27/15
20150244137 

Air-cooled gas lasers with heat transfer assembly and associated systems and methods


Embodiments of an air-cooled gas laser with a heat transfer assembly are disclosed herein. A laser configured in accordance with one embodiment includes a laser superstructure and a laser superstructure having an opening and a cavity accessible through the opening, and an electrode assembly.
Universal Laser Systems, Inc.


08/27/15
20150240564 

Drill with remotely controlled operating modes and providing the same


The present invention relates to a drilling system with a multi-function drill head used in, among other applications, oil and gas drilling. The system is used to enhance the effective permeability of an oil and/or gas reservoir by drilling or cutting new structures into the reservoir.
Ramax, Llc


08/20/15
20150235848 

Ultra long lifetime gallium arsenide


A novel bulk gaas with an increased carrier lifetime of at least 10 microseconds has been produced. This novel gaas has many uses to improve optical and electrical devices.
Bae Systems Information And Electronic Systems Integration Inc.


08/20/15
20150234295 

Dynamic patterning method that removes phase conflicts and improves pattern fidelity and cdu on a two phase-pixelated digital scanner


Phase conflicts in pattern transfer with phase masks can be resolve by exposing pattern features with a first pattern and a second pattern, wherein the second pattern is selected based on the phase conflicts. In scanned exposures using pulsed lasers, a number of exposures of the second pattern can be less than 20% of a total number of exposures..
Nikon Corporation


08/20/15
20150234188 

Control of adaptive optics


A portable display system operative to present images to a user wearing the display and to correct vision using adaptive optics may include a lens system with a variable index of refraction and an image projector and image capture device. The image projector may project a pattern onto a retina of the user's eye(s) and the image capture device may capture a retinal reflection image of the pattern.
Aliphcom


08/20/15
20150234187 

Adaptive optics


A portable display system operative to present images to a user wearing the display and to correct vision using adaptive optics may include a lens system with a variable index of refraction and an image projector and image capture device. The image projector may project a pattern onto a retina of the user's eye(s) and the image capture device may capture a retinal reflection image of the pattern.
Aliphcom


08/13/15
20150229407 

Optical semiconductor device


An optical semiconductor device includes: semiconductor lasers; a wave coupling section multiplexing light output by the semiconductor lasers; an optical amplifying section amplifying output light of the wave coupling section; first optical waveguides respectively optically connecting respective semiconductor lasers to the wave coupling section; a light intensity lowering section located in each of the first optical waveguides and lower light intensity of reflected light that is reflected at a reflecting point located in the optical semiconductor device and that returns to the respective semiconductor lasers; to decrease line width of the light output by the semiconductor lasers.. .
Mitsubishi Electric Corporation


08/13/15
20150226921 

Wavelength division multiplexing with multi-core fiber


Optical systems for wavelength division multiplexing and wavelength division demultiplexing with a multi-core fiber, and methods of their fabrication, are disclosed. The systems include a coupling mirror with a plurality of angled surfaces that are configured to direct light to or from different cores of a multi-core fiber.
International Business Machines Corporation


08/13/15
20150226708 

Laser projected acoustic sensor apparatus and method


A plurality of lasers produces a lattice of projected points. A sensor system detects movement in the projected points in response to an incoming wave..
Lockheed Martin Corporation


08/13/15
20150226607 

Acquiring a raman spectrum with multiple lasers


A spectrometer is provided for acquiring a raman spectrum from a sample. The spectrometer includes a first laser, a second laser, a detector and a processing device.
Bruker Optics, 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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