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Coherent light generators January recently filed with US Patent Office 01/12

20120020377 - Semiconductor laser device: A semiconductor laser device includes a lower cladding layer; an active layer disposed on the lower cladding layer; all upper cladding layer disposed on the active layer; a diffraction-grating layer disposed on the upper cladding layer, the diffraction-grating layer including periodic projections and recesses; and a buried layer disposed on... Agent: Sumitomo Electric Industries, Ltd.

20120020378 - Widely tunable optical parametric generator having narrow bandwidth field: Systems, methods and apparatus are provided through which in some implementations mode selection and wavelength tuning of optical parametric generation is achieved through intrinsic nonlinear crystal dispersion.... Agent:

20120020379 - Semiconductor laser module and suppression member: Above a Peltier element disposed on a bottom of a case, bases that are platy members of two or more layers and have different expansion coefficients from each other are stacked. At least on a partial region of the base serving as an uppermost layer, a suppression member having an... Agent: Furukawa Electric Co., Ltd.

20120020382 - Determining the degradation and/or efficiency of laser modules: A method for monitoring a laser system including a plurality of laser modules connected in series, there being connected in parallel to each laser module a bypass arrangement for bridging the corresponding laser module, includes determining a first laser power of the laser system with a plurality of laser modules... Agent: Trumpf Laser Gmbh + Co. Kg

20120020380 - Modulation method for diode-laser pumped lasers: A method of operating a digitally modulated solid state laser is disclosed. The laser is optically pumped by a current-supply driven diode-laser radiation and with output-power stabilized at a desired value by a light regulator cooperative with a power monitor and the current source is disclosed. When the laser is... Agent: Coherent Gmbh

20120020381 - Optical transmission module and controlling method for optical transmission module: An optical transmission module includes a bias current driver circuit adapted to input bias current set in response to a temperature of a laser diode to the laser diode, a modulation current driver circuit adapted to input modulation current set in response to the temperature of the laser diode to... Agent: Fujitsu Limited

20120020383 - Surface emitting laser, light source, and optical module: A surface emitting laser includes lower and upper multilayer mirrors, first-conductivity-type and second-conductivity-type contact layers formed between the lower and the upper multilayer mirrors, an active layer formed between the first-conductivity-type and the second-conductivity-type contact layers, a current confinement layer formed between the second-conductivity-type contact layer and the active layer,... Agent: Furukawa Electric Co., Ltd.

20120014397 - Continuous wave or ultrafast lasers: A laser system comprises: a seed oscillator, having a seed output; dispersive optics, operative to receive the seed output and divide the seed output into spectrally separate seed components; an array of individually addressable, phase adjustable laser amplifiers corresponding to the spectrally separate components, each laser amplifier receiving as its... Agent: Massachusetts Institute Of Technology

20120014399 - Grating external-cavity laser and quasi-synchronous tuning method thereof: A method for quasi-synchronous tuning of laser wavelength or frequency of grating external-cavity laser and a corresponding laser are provided. A grating or mirror is rotated around a quasi-synchronous tuning point (Pq) to achieve the quasi-synchronous tuning of frequency selections by grating and resonance cavity, wherein, on the xOy coordinate... Agent:

20120014398 - Wavelength-tunable external cavity laser module: Provided is a wavelength-tunable external cavity laser module. The wavelength-tunable external cavity laser module includes: a gain medium generating light; an optical waveguide combined with the gain medium and including a Bragg grating and a thin film heater adjusting a temperature of the Bragg grating; and a high frequency transmission... Agent: Electronics And Telecommunications Research Institute

20120014400 - Output power stabilization for laser diodes using the photon-cooling dependent laser voltage: It is an object of the invention to simplify the power stabilization of laser diodes. For this purpose, a laser device comprising a die and thereon a first laser diode and a second laser diode is provided. The second laser diode has a structure or element that avoids lasing if... Agent: Koninklijke Philips Electronics N.v.

20120014401 - Semiconductor laser driver and image forming apparatus incorporating same: A semiconductor laser driver to execute automatic power control (APC) for multiple semiconductor lasers based on a common APC output from an image controller. The semiconductor laser driver includes a drive circuit to generate an individual APC signal to execute APC for each semiconductor laser based on the common APC... Agent: Ricoh Company, Ltd.

20120014402 - Laser module: A laser module LM is provided with a quantum cascade laser 1, a tubular member 5, and an infrared detector 7. The tubular member 5 has a pair of opening ends 5a, 5b and is arranged so that one opening end 5a is opposed to a face 1b opposed to... Agent: Hamamatsu Photonics K.k.

20120014403 - Laser apparatuses with large-number multi-reflection pump systems: A large number of passes of pump light through an active mirror in a solid state disk laser is realized using a pair of coupled imaging systems, where the optical axes of imaging systems are not coincident. Two imaging systems are optically coupled, so that an image of the first... Agent: Apollo Instruments

20120008647 - Light emitting device: Disclosed is a white light emitting device including a semiconductor light emitting element configured to emit near ultraviolet light having a peak wavelength ranging from 380 to 410 nm, a first phosphor layer and a second phosphor layer. The first phosphor layer contains a blue-emitting phosphor configured to emit blue... Agent: Kabushiki Kaisha Toshiba

20120008648 - High power processing fiber cable with integrated beam expander and method of use: The present disclosure is a system for the protection of a fiber within a laser system. The system has a water-cooled housing supporting a termination block, which is operative to shield a protective layer of a delivery fiber from back-reflected beams of light. The termination block is manufactured from quartz... Agent: Ipg Photonics Corporation

20120008649 - High power short pulse fiber laser: A pulsed laser comprises an oscillator and amplifier. An attenuator and/or pre-compressor may be disposed between the oscillator and amplifier to improve performance and possibly the quality of pulses output from the laser. Such pre-compression may be implemented with spectral filters and/or dispersive elements between the oscillator and amplifier. The... Agent: Imra America, Inc.

20120008650 - Hybrid integrated tuneable laser: A hybrid integrated tuneable optical laser device, suitable for tuning to different wavelengths via a piezo micromotor (6) controlled optical filter (4) in an external cavity. Once the laser is fixed at a selected wavelength, no power is required to be applied to the wavelength tuning element to maintain the... Agent: The Centre For Integrated Photonics Limited

20120008651 - Method of material processing with laser pulses having a large spectral bandwidth and apparatus for carrying out said method: A method and device for processing materials with laser pulses having a large spectral bandwidth and a device for carrying out said method. The aim of the invention is to create an easy, flexible method enabling universally applicable processing which can, however, be adapted to specific processing and methodological requirements.... Agent: Carl Zeiss Meditec Ag

20120008653 - Laser system with dynamically stabilized transient wavelength and method of operating same: A method and laser system for dynamically adjusting a transient wavelength of light pulses emitted by a laser includes sequential processing of transient photocurrent curves which are generated after interaction between each light pulse and wavelength-selective medium which is configured with a known spectral peak line selected in the range... Agent: Ipg Photonics Corporation

20120008652 - Optical frequency stabilization system and method: One embodiment of the invention includes an optical system. The optical system includes an optical cavity comprising a plurality of reflectors. The optical system also includes optics configured to provide a first optical signal and a second optical signal into respective inputs of the optical cavity to be substantially concurrently... Agent:

20120008654 - Laser gain medium and laser oscillator using the same: A laser gain medium includes an optical medium configured to transmit a laser beam and having an incident face, a first face, a second face opposing to the first face; and gain media configured to amplify the laser beam while reflecting the laser beam. At least one of the gain... Agent: Mitsubishi Heavy Industries, Ltd.

20120008655 - Heat sink, method of producing same, and semiconductor laser device: A heat sink enabled to prevent structural deterioration of an inner wall of a flow channel caused by corrosion a semiconductor laser device are provided. The heat sink includes a main body, a flow channel which is provided in the main body, and inside which a cooling medium passes through,... Agent: Sony Corporation

20120008656 - Device for judging state of semiconductor laser and method for judging state of semiconductor laser: A device includes: a providing unit that provides a driving electric current to a semiconductor laser, the electric current being superimposed a first alternating current signal having a first frequency at a low side of an operational range of the semiconductor laser and a second alternating current signal having a... Agent: Fujitsu Limited

20120008658 - Hybrid vertical-cavity laser: The present invention provides a light source (2) for light circuits on a silicon platform (3). A vertical laser cavity is formed by a gain region (101) arranged between a top mirror (4) and a bottom grating-mirror (12) in a grating region (11) in a silicon layer (10) on a... Agent:

20120008660 - Iii-nitride semiconductor laser, and method for fabricating iii-nitride semiconductor laser: Provided is a III-nitride semiconductor laser allowing for provision of a low threshold with use of a semipolar plane. A primary surface 13a of a semiconductor substrate 13 is inclined at an angle of inclination AOFF in the range of not less than 50 degrees and not more than 70... Agent: Sumitomo Electric Industries, Ltd.

20120008657 - Laser diode: A laser diode with an improved kink level in the L-I characteristic and capable of obtaining a stable high output in a horizontal transverse mode is provided. The laser diode includes an active layer made of nitride III-V compound semiconductor containing at least gallium (Ga) in 3B-group elements and at... Agent: Sony Corporation

20120008659 - Surface emitting laser: A surface emitting laser includes a cavity region formed on a group-III-V compound substrate, which includes an active layer and a current confinement layer that has an aluminum oxide compound and confines a current path through which a current is injected into the active layer, an upper DBR mirror and... Agent: Furukawa Electric Co., Ltd.

20120002685 - High voltage switch with adjustable current: The present disclosure relates to a high voltage switch which may comprise a chain of MOS field-effect transistors (MOSFETs). The current of the individual MOSFETS, and hence the chain, can be controlled by means of adding a current measuring resistance into the source path of the transistors and transmitting the... Agent: Bergmann Messgerate Entwicklung Kg

20120002687 - Laser system: A method and apparatus may comprise a line narrowed pulsed excimer or molecular fluorine gas discharge laser system which may comprise a seed laser oscillator producing an output comprising a laser output light beam of pulses which may comprise a first gas discharge excimer or molecular fluorine laser chamber; a... Agent: Cymer, Inc.

20120002686 - Process and apparatus for a wavelength tuning source: An apparatus and source arrangement for filtering an electromagnetic radiation can be provided which may include at least one spectral separating arrangement configured to physically separate one or more components of the electromagnetic radiation based on a frequency of the electromagnetic radiation. The apparatus and source arrangement may also have... Agent: The General Hospital Corporation

20120002688 - Method and system using phase modulation to reduce spectral broadening: A laser system includes a seed laser operable to output a seed laser signal along an optical path and a phase modulator disposed along the optical path and operable to receive the seed laser signal. The laser system also includes a phase modulator driver coupled to the phase modulator. A... Agent: Deep Photonics Corporation

20120002689 - Method and system for non-mechanical rapid tuning of an optical parametric oscillator: An OPO is disclosed capable of rapid frequency tuning by non-mechanical means. The OPO includes a resonant cavity including one or more non-linear crystals in an optical path thereof. A pump laser pulse is transmitted into the resonant cavity simultaneously with a seed beam having a desired wavelength. The output... Agent: Utah State University Research Foundation

20120002690 - Method of driving a laser diode: An ultrashort pulse/ultra-high power laser diode with a simple structure and configuration is provided. In a method of driving a laser diode, the laser diode is driven by a pulse current which is 10 or more times higher than a threshold current value. The width of the pulse current is... Agent: Sony Corporation

20120002691 - System and method for providing a safety mechanism for a laser-emitting device: This invention generally relates to systems and methods for providing a safety mechanism for a laser-emitting device, and more specifically, to providing a safety mechanism for a portable laser-emitting illumination device. A lock interface is provided that allows that user to input a unlock code to activate or deactivate the... Agent:

20120002693 - Nitride compound semiconductor element and method for manufacturing same: The present invention is directed to a production method for a nitride compound semiconductor element including a substrate and a multilayer structure 40 supported by an upper face of the substrate. First, a wafer 1 to be split into individual substrates is provided. A plurality of semiconductor layers composing the... Agent: Panasonic Corporation

20120002692 - Surface-emitting laser light source using two-dimensional photonic crystal: The present invention intends to provide a surface-emitting laser light source using a two-dimensional photonic crystal in which the efficiency of extracting light in a direction perpendicular to the surface is high. In a laser light source provided with a two-dimensional photonic crystal layer created from a plate-shaped matrix body... Agent: Kyoto University

20120002694 - Loss modulated silicon evanescent lasers: Loss modulated silicon evanescent lasers are disclosed. A loss-modulated semiconductor laser device in accordance with one or more embodiments of the present invention comprises a semiconductor-on-insulator (SOI) structure resident on a first substrate, the SOI structure comprising a waveguide in a semiconductor layer of the SOI structure, and a semiconductor... Agent: The Regents Of The University Of California

20120002695 - Method of driving a laser diode: An ultrashort pulse/ultra-high power laser diode with a simple structure and configuration is provided. In a method of driving a laser diode, the laser diode is driven by a pulse current which is 10 or more times higher than a threshold current value. The width of the pulse current is... Agent: Sony Corporation

20120002696 - Alignment method of semiconductor optical amplifier and light output device: Provided is an alignment method of a semiconductor optical amplifier with which optimization of coupling efficiency between incident laser light and light waveguide of the semiconductor optical amplifier is enabled without depending on an external monitoring device. The alignment method of a semiconductor optical amplifier is a method that optically... Agent: Sony Corporation