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Coherent light generators March listing by industry category 03/13

20130077643 - Reciprocating laser scanning device: The present invention is a sweeping or reciprocating laser scanning device. The reciprocation or sweeping motion is cam driven. As the cam rotates, a lever arm is reciprocated or oscillated between two positions, which causes the laser or beam of light to move linearly, thus creating a triangular plane of... Agent:

20130077645 - High-power, phase-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... Agent: Pd-ld, Inc.

20130077644 - Method for determining stabilization of light output signal and laser frequency stabilizing device: A method for determining stabilization of a light output signal employed by a laser frequency stabilizing device which irradiates laser light on an absorption cell to obtain the light output signal and, based on a saturated absorption line contained in the light output signal, changes a resonator length to stabilize... Agent: Mitutoyo Corporation

20130077646 - Automatic modulation control for maintaining constant extinction ratio (er), or constant optical modulation amplitude (oma) in an optical transceiver: To a laser that has no tracking error a desired laser modulation current to maintain constant Optical Modulation Amplitude (OMA) is closely proportional to the laser bias current, lb, at any temperature when the laser is under constant power according to embodiments. To a laser that has tracking error a... Agent:

20130077647 - Surface-emission laser devices, surface-emission laser array having the same, electrophotographic system and optical communication system: A surface-emission laser device comprises an active layer, cavity spacer layers provided at both sides of the active layer, reflection layers provided at respective sides of the cavity spacer layers, the reflection layers reflecting an oscillation light oscillated in the active layer and a selective oxidation layer. The selective oxidation... Agent:

20130077648 - Surface emitting semiconductor laser and method of manufacture thereof: A VECSEL-type surface-emitting semiconductor laser device is manufactured by providing a first component part (10) comprising a layered first mirror (12), providing a second component part (20) comprising a layered active region (22), permanently joining the second component part to the first component part to form an integral unit, and... Agent: Eth Zurich, Eth Transfer

20130070793 - Fiber laser: A fiber laser includes: a seed light source; a preamplifier unit including a first optical fiber doped with a first rare earth element and amplifying a pulse seed light; a main amplifier unit including a second optical fiber doped with a second rare earth element and the first rare earth... Agent: Kabushiki Kaisha Toshiba

20130070794 - Dynamical fabry-pérot tuneable filter device: A Fabry-Pérot tuneable filter device is described with reflecting elements separated by an optical path length to form an optical resonator cavity. A first actuator means is directly or indirectly coupled with a first reflecting element. And the first actuator means is configured to modulate the optical path length between... Agent: Ludwig-maximilians-universit&#xe4 T M&#xfc Nchen

20130070795 - Method to switch emission wavelength of tunable laser diode: The method to change the emission wavelength of a tunable LD is disclosed. In an ordinary state, the method monitors conditions not only relating to determine the emission wavelength but conditions independent of the emission wavelength by an ordinary A/D-C implemented within the controller. Responding to an instruction to switch... Agent: Sumitomo Electric Industries, Ltd.

20130070796 - Scalable buck-boost dc-dc converter: A DC-DC converter is disclosed having an input configured to receive an input signal and an output configured to present an output signal at a different voltage than the input signal. The converter also includes at least one inductor and at least one capacitor. Two or more transistors fingers are... Agent:

20130070797 - Laser unit with suppressed feedback: Laser unit, preferably for gas detection, with a semiconductor laser chip comprising an output mirror with an exit zone for a laser beam and an optical element that reduces self-mixing which is arranged at the exit zone, wherein optical element and laser chip are connected with each other with direct... Agent: Leister Process Technologies

20130070798 - Semiconductor laser and method of manufacturing the same: A semiconductor laser includes a semiconductor laser portion including an active layer portion having a p-type cladding layer, an active layer, and an n-type cladding layer on a p-type InP semiconductor substrate; and current confining structures that fill spaces on both sides of the semiconductor laser portion. Each of the... Agent: Mitsubishi Electric Corporation

20130070799 - Surface plasmon laser: A surface plasmon laser includes a metal layer, a gain medium layer provided on the metal layer and having a circular structure portion in which a whispering gallery mode is generated in which surface plasmon light generated due to surface plasmon resonance on an interface with the metal layer rotates... Agent: Samsung Electronics Co., Ltd.

20130070800 - Semiconductor laser diodes: A semiconductor laser diode comprises a semiconductor body having an n-region and a p-region laterally spaced apart within the semiconductor body. The laser diode is provided with an active region between the n-region and the p-region having a front end and a back end section, an n-metallisation layer located adjacent... Agent:

20130070801 - Semiconductor laser device and method of manufacturing the same: A semiconductor laser device includes a first cavity facet formed on an end of the semiconductor element layer on a light-emitting side of a region including the light emitting layer, a first insulating film, made of AlN, formed on a surface of the first cavity facet and a second insulating... Agent: Sanyo Electric Co., Ltd.

20130070802 - Laser apparatus and method of controlling the laser apparatus: Disclosed is a method of controlling a laser apparatus, which has a laser light irradiation unit, an excitation unit including a flash lamp, a laser light shielding unit, and a control unit configured to control light shielding by the light shielding unit and release of the light shielding and control... Agent: Canon Kabushiki Kaisha

20130064256 - Controllable multi-wavelength laser source: In at least one embodiment a laser system includes a fiber laser source, a polarization controller and a wavelength converter. The relative power distribution between a pump wavelength and a signal wavelength is controllable using the polarization controller. An optional phase compensator is used to control polarization state of the... Agent: Imra America, Inc.

20130064257 - Pulse light source: The pulse light source comprises a seed light source, a first YbDF, a band-pass filter, a second YbDF, and a third YbDF, and has the MOPA structure. The band-pass filter inputs pulse light which is outputted from the seed light source and amplified by the first stage YbDF, and outputs,... Agent: Sumitomo Electric Industries, Ltd.

20130064258 - Master oscillator system and laser apparatus: A master oscillator system may include a grating that functions as one of a plurality of resonator mirrors in an optical resonator, an optical element disposed within an optical path between the plurality of resonator mirrors, and an attitude control mechanism that adjusts an angle at which laser light traveling... Agent: Gigaphoton Inc.

20130064259 - Solid-state laser apparatus and laser system: A solid-state laser apparatus may include: a master oscillator configured to output laser light having at least one longitudinal mode, the master oscillator being capable of changing the spectral linewidth of the laser light output therefrom; at least one amplifier located downstream of the master oscillator on an optical path;... Agent: Gigaphoton Inc.

20130064260 - Light emitting device: Broad light emission is provided and additionally heat conductivity is increased to improve reliability. A light emitting device comprises a light emitting element, a pair of conductor members, a transparent board and a transparent member. The conductor members are spaced away from each other at an interval in a side-surface... Agent: Nichia Corporation

20130064261 - Solid state laser device using a selected crystal orientation in non-polar or semi-polar gan containing materials and methods: An edge emitting solid state laser and method. The laser comprises at least one AlInGaN active layer on a bulk GaN substrate with a non-polar or semi-polar orientation. The edges of the laser comprise {1 1−2±6} facets. The laser has high gain, low threshold currents, capability for extended operation at... Agent: Soraa, Inc.

20130064262 - Ultrashort pulse microchip laser, semiconductor laser, and pump method for thin laser media: The invention relates to an optically pumped ultrashort pulse microchip laser for generating a laser emission having femto- or picosecond pulses, comprising a substrate, an amplifying laser medium, a first resonator mirror that is at least partially transparent to optical pump radiation, and in particular a saturable absorber structure. The... Agent:

20130064263 - Vertical cavity surface emitting laser and manufacturing method thereof: The present invention discloses a manufacturing method of vertical cavity surface emitting laser. The method includes following steps: providing a substrate; forming an epitaxial layer stack including an aluminum-rich layer; forming an ion-doping mask including a ring-shaped opening; doping ions in the epitaxial layer stack through the ring-shaped opening and... Agent: True Light Corporation

20130064264 - Light source and method for producing light: The invention relates to a light source, comprising an optical resonator (1) and an optical medium (2) arranged therein that can be excited so as to emit light, wherein the optical medium (2) comprises at least one two-level system, in particular a two-level system that is not population-inverted, having an... Agent:

20130058364 - Fourier domain mode locking: method and apparatus for control and improved performance: A control system for improving and stabilizing Fourier domain mode locking (FDML) operation. The control system may also provide regulation of FDML operational parameters such as filter tuning, laser gain, polarization, polarization chromaticity, elliptical polarization retardance, and/or dispersion. The control system may be located internal to or external from the... Agent: Massachusetts Institute Of Technology

20130058365 - Tunable laser system having fine and coarse wavelength discrimination: A tunable laser system having fine and coarse wavelength discrimination is provided. The tunable laser system includes a first filter having a first free spectral range (FSR) and a second filter having a second FSR different from the first FSR. The first filter provides a first series of pulses from... Agent:

20130058366 - Pulsed supercontinuum source of variable pulse duration: A supercontinuum source capable of emitting waves between the infrared range and the ultraviolet range, includes a pulsed laser source (12) capable of generating a laser beam and a non-linear microstructured optical fibre (14) capable of receiving the laser beam, in such a way that the supercontinuum source is capable... Agent: Leukos

20130058367 - Mount for semiconductor devices using conformable conductive layers, and method: Mount for semiconductor laser devices comprises thermally conductive anode and cathode blocks on either side of semiconductor laser device such as laser diode. Interposed between at least the anode block and the anode of the semiconductor laser device is a sheet of conformable electrically conductive material with high thermal conductivity... Agent: Intellectual Light, Inc.

20130058368 - Laser driver: An apparatus is provided. The apparatus includes a lasing element, a laser driver and logic. The laser driver is configured to drive the lasing element at multiple current levels, and the laser driver includes a switching network, multiple direct current (DC) loops, and an output circuit. The switching network receives... Agent: Texas Instruments Incorporated

20130058369 - Semiconductor device having an ingan layer: An InGaN-on-substrate structure that includes an InGaN layer and two mirror layers on opposing sides of and sandwiching the InGaN layer. The InGN layer includes an InGaN seed layer and an active InGaN layer grown on the InGaN seed layer. Such a structure is useful in a vertical optoelectronic device.... Agent: Soitec

20130058370 - Planar, high na, low loss transmitting or reflecting lenses using sub-wavelength high contrast grating: Planar lenses and reflectors are described comprising subwavelength high-contrast gratings (HCG) having high index of refraction grating elements spaced apart from one another in straight and/or curved segments and surrounded by low index material. The high-contrast grating is configured to receive an incident wave which excites multiple modes within the... Agent: The Regents Of The University Of California

20130058371 - Semiconductor optical integrated device: A semiconductor optical integrated device includes a substrate having a main surface with a first and second regions arranged along a waveguiding direction; a gain region including a first cladding layer, an active layer, and a second cladding layer arranged on the first region of the main surface; and a... Agent: Sumitomo Electric Industries, Ltd.