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Coherent light generators September class, title,number 09/12

20120243562 - Laser diode driver: Embodiments of the invention provide a laser light source comprising: a plurality of lasers connected in series; and a laser driver controllable to simultaneously drive a substantially same current through a combination of the lasers selectable from different combinations of lasers in the plurality of lasers and not through lasers... Agent: Soreq Nuclear Research Center

20120243563 - Compact multi-wavelength and multi-beam laser: A compact solid state laser that generates multiple wavelengths and multiple beams that are parallel, i.e., bore-sighted relative to each other, is disclosed. Each of the multiple laser beams can be at a different wavelength, pulse energy, pulse length, repetition rate and average power. Each of the laser beams can... Agent: United States Of America, As Represented By The Secretary Of The Army

20120243564 - System and method for agile remote generation of a broadband tunable short-pulse emission: A method comprising using a pulse shaper in the spectral domain to generate multiple-color pulses directly at the output of the laser amplifier. The delay can thus be controlled directly in the spectral domain and there is no need for an optical delay line. The method allows reducing the number... Agent:

20120243565 - Master oscillator, laser system, and laser light generation method: A master oscillator may include: a pumping laser that outputs pumping light; a seed laser that is oscillated by the pumping light; an amplifier that amplifies the pulsed laser light outputted by the seed laser using the pumping light; at least one optical shutter disposed in the optical path between... Agent: Gigaphoton Inc.

20120243566 - System and method for generating extreme ultraviolet light: A system includes a chamber, a laser beam apparatus configured to generate a laser beam to be introduced into the chamber, a laser controller for the laser beam apparatus to control at least a beam intensity and an output timing of the laser beam, and a target supply unit configured... Agent: Gigaphoton Inc

20120243567 - Laser irradiation device and microparticle measuring device: A laser irradiation device includes: a laser light source; a mirror that reflects a part of light output from the laser light source and allows the remainder to pass; an optical detector that detects reflection light reflected by the mirror; and a feedback control circuit that receives a signal output... Agent: Sony Corporation

20120243568 - Method of operating all-fiber-based ultra pulse laser system: A method of operating an all-fiber-based ultra short pulse laser system is provided. The steps includes providing an all-fiber-based ultra short pulse laser system having a pulse pump light source, a fiber saturable absorber, an assistant light source, at least a dispersion fiber, and a light coupling output; generating a... Agent: Industrial Technology Research Institute

20120243569 - Multi-beam semiconductor laser apparatus: A multi-beam semiconductor laser apparatus includes three or more stripe semiconductor laser emission units which are arranged on a substrate, isolation grooves which separate the semiconductor laser emission units from each other, and pad electrodes which are disposed on outer sides of the outermost semiconductor laser emission units. The isolation... Agent: Rohm Co., Ltd.

20120243570 - Integrated pod optical bench design: In an integrated gimbal and High-Powered Multiband Laser (HPMBL) for use in an infrared countermeasure apparatus in a pod mounted on an aircraft, the improvement comprises an optical bench that connects the optical path between side-by-side mounted gimbal and high power laser; and a kinematic mounting system that prevents optical... Agent: Bae Systems Information And Electronic Systems Integration Inc.

20120236881 - Pulsed fiber laser: A method and a laser system for generating a pulsed laser signal with a laser signal wavelength and a laser signal repetition rate, the laser system includes a fiber laser unit includes a cladding pumped fiber laser includes a fiber laser light guiding region surrounded by a pump cladding, the... Agent: Nkt Photonics As

20120236882 - Method and system for suppression of stimulated raman scattering in laser materials: A composition of matter is provided having the general chemical formula K(H,D)2P(16Ox,18Oy)4, where x<0.998 or y>0.002, and x+y≈1. Additionally, a method of fabricating an optical material by growth from solution is provided. The method includes providing a solution including a predetermined percentage of (H,D)216O and a predetermined percentage of (H,D)218O,... Agent: Lawrence Livermore National Security, LLC

20120236883 - Methods, systems, and devices for timing control in electromagnetic radiation sources: In one embodiment, the invention relates to systems, methods and devices for improving the operation of an electromagnetic radiation source or component thereof. In one embodiment, the source is a laser source. A Fourier domain mode locked laser can be used in various embodiments. The sources described herein can be... Agent: Lightlab Imaging, Inc.

20120236884 - Laser apparatus: This disclosure is directed to widen an adjustable range of the spectral linewidth of laser light output from a laser apparatus. This laser apparatus may include: (1) an excitation source configured to excite a laser medium in a laser gain space, (2) an optical resonator including an output coupler arranged... Agent: Gigaphoton Inc.

20120236885 - Laser device for exposure apparatus: A laser device for an exposure apparatus may include: a MOPA-type or MOPO-type laser device including a seed laser and at least one gas discharge-pumped amplifier stage that receives output light from the seed laser as an input, amplifies the light, and outputs the amplified light; and at least one... Agent: Gigaphoton Inc.

20120236886 - Laser diode element assembly and method of driving the same: A laser diode element assembly includes: a laser diode element; and a light reflector, in which the laser diode element includes (a) a laminate structure body configured by laminating, in order, a first compound semiconductor layer of a first conductivity type made of a GaN-based compound semiconductor, a third compound... Agent: Sony Corporation

20120236888 - Method to drive semiconductor laser diode: A method or algorithm to control a driving current supplied to a semiconductor laser diode (LD) is disclosed. the method first prepares the look-up-table (LUT) that stores a set of parameters, α and β, for evaluating the modulation current Im by the equation of Im=α×Ib+β, where Ib is determined by... Agent: Sumitomo Electric Device Innovations, Inc.

20120236887 - Optical pickup apparatus, integrated circuit, and method for controlling laser output of optical pickup apparatus: An optical-pickup apparatus includes: a first laser light source including a first laser diode to emit a laser beam having a first wavelength, and a back-monitor photodetector to receive the laser beam emitted in a backward direction, not being an optical-disc direction, and output a first monitor signal; a second... Agent: Semiconductor Components Industries, LLC

20120236892 - Lasers with ingaas(p) quantum wells with indium ingap barrier layers with reduced decomposition: A method for preparing a VCSEL can use MBE for: growing a first conduction region over a first mirror region; growing an active region over the first conduction region opposite of the first mirror region, including: (a) growing a quantum well barrier having In1-xGaxP(As); (b) growing an transitional layer having... Agent: Finisar Corporation

20120236891 - Lasers with quantum wells having high indium and low aluminum with barrier layers having high aluminum and low indium with reduced traps: A VCSEL can include: one or more quantum wells having (Al)InGaAs; two or more quantum well barriers having Al(In)GaAs bounding the one or more quantum well layers; and one or more transitional monolayers deposited between each quantum well layer and quantum well barrier, wherein the quantum wells, barriers and transitional... Agent: Finisar Corporation

20120236889 - P-type isolation between qcl regions: A quantum cascade laser and its method of fabrication are provided. The quantum cascade laser comprises one or more p-type electrical isolation regions and a plurality of electrically isolated laser sections extending along a waveguide axis of the laser. An active waveguide core is sandwiched between upper and lower n-type... Agent:

20120236890 - P-type isolation regions adjacent to semiconductor laser facets: A quantum cascade laser and its method of fabrication are provided. The quantum cascade laser comprises one or more p-type electrical isolation regions and a plurality of electrically isolated laser sections extending along a waveguide axis of the laser. An active waveguide core is sandwiched between upper and lower n-type... Agent:

20120236893 - Semiconductor laser mounting for improved frequency stability: A first contact surface of a semiconductor laser chip can be formed to a target surface roughness selected to have a maximum peak to valley height that is substantially smaller than a barrier layer thickness of a metallic barrier layer to be applied to the first contact surface. A metallic... Agent:

20120236894 - Wavelength conversion device, solid-state laser apparatus, and laser system: A wavelength conversion device in this disclosure may include: a nonlinear crystal including a first surface; a first film to be joined to the first surface and including at least one layer; and a first prism to be joined to the first film.... Agent: Gigaphoton Inc.

20120236896 - Atmosphere stabilization method and laser processing apparatus: Disruption of a gas atmosphere does not occur when a substrate is rotated 90° after it is carried into a laser processing apparatus. The substrate is carried such that a gas ejection port is positioned near a midportion of a first side of the substrate. The substrate is linearly moved... Agent: The Japan Steel Works ,ltd.

20120236895 - Split ring resonator creating a photonic metamaterial: A split ring-resonator includes a substrate, an inner-trench or cavity formed into the substrate, the inner trench or cavity including a split, and an outer trench or cavity formed into the substrate around the inner trench or cavity, the outer trench or cavity including another split disposed at an opposite... Agent: Miles Technologies, LLC

20120236897 - Stripline laser: In a stripline laser, a gas mixture containing carbon dioxide is situated as a laser-active medium between two plate-type electrodes lying with their flat sides opposite one another. The electrodes define a discharge space, at whose end sides lying opposite one another a resonator mirror is respectively arranged. The resonator... Agent: Rofin Sinar Laser Gmbh

20120230352 - High-power cw fiber-laser: A CW fiber-laser includes a gain fiber having a reflector proximity-coupled to one end, with the other end left uncoated. A laser resonator is defined by the reflector and the uncoated end of the gain-fiber. Pump-radiation from two fast-axis diode-laser bar stacks is combined and focused into the uncoated end... Agent: Coherent, Inc.

20120230353 - Optical pulse source with increased peak power: In at least one embodiment time separated pulse pairs are generated, followed by amplification to increase the available peak and/or average power. The pulses are characterized by a time separation that exceeds the input pulse width and with distinct polarization states. The time and polarization discrimination allows easy extraction of... Agent: Imra America, Inc.

20120230354 - Wavelength-tunable light source: In at least one embodiment, a wavelength-tunable light source includes at least one fiber-based partial section and at least one delay section. For a wavelength λ of at least one portion of a radiation emitted by the light source as a function of time t, the relationship λ(t)=λ(t−τ) holds true.... Agent: Ludwig-maximilians-universitaet Muenchen

20120230355 - System for monitoring all-optical polarization having a contra-propagating pump beam: The present invention relates to a system (1) for stabilizing the polarization of an input light beam (2′), including a means (3) for optically guiding the input light beam (2′). In said system, the optical guide means (3) has Kerr nonlinearity and low polarization mode dispersion. Additionally, said system (1)... Agent: Centre National De La Recherche Scientifique - Cnrs

20120230356 - Scalable, efficient laser systems: A laser comprises an end pump light source and a gain medium having a first end, a second end, and four sides comprising a first, a second, a third, and a fourth side. The end pump light source is optically coupled to the first end and pumps the gain medium.... Agent:

20120230357 - Gan laser element: In a GaN-based laser device having a GaN-based semiconductor stacked-layered structure including a light emitting layer, the semiconductor stacked-layered structure includes a ridge stripe structure causing a stripe-shaped waveguide, and has side surfaces opposite to each other to sandwich the stripe-shaped waveguide in its width direction therebetween. At least part... Agent: Sharp Kabushiki Kaisha

20120230358 - High-power quantum cascade lasers with active-photonic-crystal structure for single, in-phase mode operation: Semiconductor laser array devices capable of emitting mid- to long-wavelength infrared (i.e., 4-12 μm) radiation are provided. The devices include a quantum cascade laser (QCL) structure comprising one or more active cores; an optical confinement structure; a cladding structure, and a plurality of laterally-spaced trench regions extending transversely through the... Agent: Wisconsin Alumni Research Foundation

20120230359 - Quantum cascade laser: A quantum cascade laser includes a plurality of active layers, each of active layers including a first barrier layer, a first quantum well layer, a second barrier layer, a second quantum well layer, a third barrier layer, a third quantum well layer, and a fourth bather layer provided in this... Agent: Sumitomo Electric Industries, Ltd.

20120230361 - Surface emission laser: Specifically, provided is a horizontal-cavity surface-emitting laser including, on a semiconductor substrate: a cavity structure; a waveguide layer; and a reflecting part, wherein a first electrode provided on the semiconductor substrate along side regions of the cavity structure and the reflecting part and a second electrode provided on the main... Agent:

20120230360 - Surface emitting laser element: Disclosed is a surface emitting laser element capable of reducing threshold current. A surface emitting laser element according to an embodiment includes a semiconductor portion having a first semiconductor layer and a second semiconductor layer, a first reflector disposed at the first semiconductor layer side of the semiconductor portion, and... Agent: Nichia Corporation

20120230362 - Laser tube with distributed taps for a gas discharge rf-excited laser: A laser device is provided. The laser device includes a laser tube, and power devices distributed uniformly along the length of the laser tube.... Agent: Synrad, Inc.

20120224594 - Wavelength tunable filter and wavelength tunable laser module: A wavelength tunable filter and a wavelength tunable laser module are a codirectional coupler type whose characteristics do not vary significantly with a process error. They are structured so as to include a semiconductor substrate which has a first optical waveguide and a second optical waveguide. The first and the... Agent: Opnext Japan, Inc.

20120224595 - Single-mode intra-cavity frequency-doubled cw solid-state laser with volumetric gain-grating: A solid state-gain medium is in the form of a thin disk backed by a reflective coating. A laser resonator is formed by the reflective coating and another mirror. Optical pump radiation is directed into the thin-disk gain-medium for energizing the gain-medium and generating a standing wave of fundamental-wavelength radiation... Agent: Coherent, Inc.

20120224596 - Ultrashort pulse laser processing apparatus: An ultrashort pulse laser processing apparatus for processing a processing target includes: a laser head which includes a seed laser source emitting an ultrashort pulse seed laser, and emits a laser pulse; an optical fiber which guides the laser pulse emitted from the laser head; and an emission end unit... Agent: Nidek Co., Ltd.

20120224597 - Method and system for ultrashort pulse fiber delivery using higher order mode fiber: Embodiments of the present invention describe systems and methods for delivering ultrashort laser pulses through an optical fiber system with higher order mode fiber output and without pre-chirping. In one embodiment of the present invention, an all-fiber delivery system comprises a mode-locked solid-state or fiber laser for generating laser pulses... Agent: Ofs Fitel, LLC

20120224598 - Polarity independent laser monitor diode current sensing circuit for optical modules: A laser bias control and monitoring circuit receives a monitor diode current on an input node and generate a bias current for a laser diode on an output node where the monitor diode current flows into (positive polarity) or out of (negative polarity) the input node. The laser bias control... Agent: Micrel, Inc.

20120224599 - Mid-ir microchip laser: zns:cr2+ laser with saturable absorber material: A method of fabrication of laser gain material and utilization of such media includes the steps of introducing a transitional metal, preferably Cr2+ thin film of controllable thickness on the ZnS crystal facets after crystal growth by means of pulse laser deposition or plasma sputtering, thermal annealing of the crystals... Agent: The Uab Research Foundation

20120224600 - Two-stage laser system for aligners: The invention relates to a two-stage laser system well fit for semiconductor aligners, which is reduced in terms of spatial coherence while taking advantage of the high stability, high output efficiency and fine line width of the MOPO mode. The two-stage laser system for aligners comprises an oscillation-stage laser (50)... Agent: Komatsu Ltd.