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Coherent light generators March listing by industry category 03/10

20100074279 - Environmentally stable passively modelocked fiber laser pulse source: The present invention is directed to providing an environmentally stable, ultra-short pulse source. Exemplary embodiments relate to passively modelocked ultra-short fiber lasers which are insensitive to temperature variations and which possess only negligible sensitivity to pressure variations. Further, exemplary embodiments can be implemented in a cost-effective manner which render them... Agent: Knobbe Martens Olson & Bear LLP

20100074280 - Single-longitudinal mode laser with orthogonal-polarization traveling-wave mode: A single longitudinal-mode laser includes a first mirror and a second mirror that define a laser cavity therein that does not include a linear polarizer. A birefringent gain medium can generate a lasing light at a lasing wavelength along a light propagation direction in response to a pump light at... Agent: Xin Wen

20100074281 - Thulium laser pumped mid-ir source with multi-spectral line output: A Thulium laser (15) is used to directly drive a ZnGeP2 optical parametric oscillator (30) with a nominal 2 μm output to simultaneous generate outputs at 2 microns and multiple outputs in the 3-5 micron wavelength range. In one embodiment, the ZGP OPO is configured as a linear resonator and... Agent: Bae Systems

20100074282 - Wavelength-tunable external cavity laser: Provided is a tunable external cavity laser. The tunable external cavity laser includes that a bragg grating hermetically packaged in a TO can, a superluminescent diode (SLD) using an optical source signal and an optical fiber. A lasing wavelength is decided when the optical source signal emitted from the SLD... Agent: Rabin & Berdo, PC

20100074283 - Light source device, image display apparatus, and method of driving light emitting element: A light source device includes: a light emitting element; a pulse drive section adapted to supply the light emitting element with a pulse current in order for controlling an average emission light intensity from the light emitting element; and a light emitting element shunt section disposed in parallel to the... Agent: Workman Nydegger 1000 Eagle Gate Tower

20100074284 - Light source unit and image displaying apparatus using the same: An object is to provide a light source unit that focuses a laser beam having different divergence angles in longitudinal direction and lateral direction, without deviating longitudinally and laterally from an incident end-face of an optical fiber, and also that simplifies assembling lenses into a lens barrel. The light source... Agent: Birch Stewart Kolasch & Birch

20100074285 - Microchannel cooler for high efficiency laser diode heat extraction: A laser diode package includes a laser diode, a cooler, and a metallization layer. The laser diode is used for converting electrical energy to optical energy. The cooler receives and routes a coolant from a cooling source via internal channels. The cooler includes a plurality of ceramic sheets and a... Agent: Nixon Peabody, LLP

20100074286 - Laser power control arrangements in electro-optical readers: Laser power control arrangements interrupt power to a laser used in electro-optical readers upon detection of an over-power condition not conforming to preestablished regulatory standards. In one embodiment, during an operational mode, a difference between laser drive currents at two operating points is compared to a difference between laser drive... Agent: Motorola, Inc.

20100074287 - Semiconductor laser device: The present invention includes a semiconductor laser element, a lead, a first packaging member and a second packaging member. The lead includes a mount surface for supporting the semiconductor laser element. The first packaging member includes a first wall and a second wall. The first and the second walls are... Agent: Hamre, Schumann, Mueller & Larson, P.C.

20100074288 - Semiconductor laser device: A semiconductor laser device of the present invention includes a plurality of semiconductor laser elements for emitting a laser beam, a stem and a plurality of leads. The stem includes a base portion and a block portion for supporting the semiconductor laser elements. The base portion includes at least one... Agent: Hamre, Schumann, Mueller & Larson, P.C.

20100074291 - Distributed feedback semiconductor laser device: A DFB laser device which can reduce influence of reflected return light and improve output characteristics and can provide a small-sized and inexpensive optical module when mounted on the optical module. The GC-DFB laser device (10) includes a semiconductor substrate (100), a waveguide layer (104) and an active layer (106)... Agent: Rabin & Berdo, PC

20100074290 - Semiconductor laser device: A semiconductor laser device has a stacked structure formed on a main surface of a substrate (1) and including an MQW active layer (5) made of a group-III nitride semiconductor. The stacked structure has a stripe-shaped waveguide formed on a main surface thereof. One of opposing facets of the waveguide... Agent: Mcdermott Will & Emery LLP

20100074289 - Semiconductor light emitting element: A two-wavelength semiconductor laser 1 includes an n-type GaN substrate 101, an n-type GaAs substrate 201 disposed on a predetermined face of the n-type GaN substrate 101, a blue-violet laser 100 provided on one of faces of the n-type GaN substrate 101 and including a multi-quantum well active layer 105,... Agent: Sughrue Mion, PLLC

20100074292 - Semiconductor light emitting devices with non-epitaxial upper cladding: The AlGaN upper cladding layer of a nitride laser diode is replaced by a non-epitaxial layer, such as metallic silver. If chosen to have a relatively low refractive index value, the mode loss from absorption in the non-epitaxial cladding layer is acceptably small. If also chosen to have a relatively... Agent: JasIPConsulting

20100074293 - Single-photon source and method for the production and operation thereof: In a method for the production of a single photon source with a given operational performance, the given operational performance for the individual photon source may be fixed by a directed setting of the fine structure gap of the excitonic energy level for at least one quantum dot. The at... Agent: Lerner Greenberg Stemer LLP

20100074294 - Apparatus and method of establishing optical communication channels between a steerable array of laser emitters and an array of optical detectors: An array of light beam emitter sections comprises: a substrate having a surface divided into an array of sections; and a grouping of light emitters disposed at each surface section and configured to emit light beams at different emission angles with respect to the surface. Also disclosed is apparatus for... Agent: Hewlett-packard Company Intellectual Property Administration

20100074295 - Immersion lithography laser light source with pulse stretcher: An apparatus and method are disclosed which may comprise a pulsed gas discharge laser lithography light source which may comprise a seed laser portion providing a seed laser output light beam of seed pulses; an amplifier portion receiving the seed laser output light beam and amplifying the optical intensity of... Agent: Cymer, Inc. Legal Dept.

20100074296 - Solid state laser and wavelength conversion laser: Two convex lenses (61, 62), each of which has a focal length “f”, and a 90 degree polarization rotator (5) are interposed between solid-state laser elements (21, 22) of a symmetrical resonator having the two solid-state laser elements (21, 22); a space between the two lenses (61, 62) is made... Agent: Sughrue-265550

20100067554 - Fast wavelength tuning techniques for external cavity lasers: An apparatus comprising a laser source configured to emit a light beam along a first path, an optical beam steering component configured to steer the light beam from the first path to a second path at an angle to the first path, and a diffraction grating configured to reflect back... Agent: Conley Rose, P.C.

20100067555 - Tunable optical supercontinuum enhancement: A method and apparatus for providing optical supercontinuum. The method comprises creating a spectrally narrow phase feature within a supercontinuum spectrum produced from a laser pulse that has been subjected to supercontinuum generation, thereby producing a modified supercontinuum spectrum, and propagating the modified supercontinuum spectrum through an optical waveguide that... Agent: Ratnerprestia

20100067556 - Diode laser bars and method for the production thereof: There is provided a method for the production of diode laser bars from a wafer, wherein a metal layer is applied to the wafer in such a way that it does not extend up to the later facets of the diode laser bars to be separated, the diode laser bars... Agent: Ulbrich I.p., Ltd

20100067557 - High-efficiency unipolar quantum cascade laser: The present invention pertains to a unipolar quantum cascade laser consisting of several semiconductor multilayer structures (C) that are layered behind one another between two electrodes in a periodic sequence such that an active area (A) and a transitional or injection area (B) respectively alternate. The active areas (A) respectively... Agent: Renner Kenner Greive Bobak Taylor & Weber

20100067558 - Semiconductor laser: A semiconductor laser having a high electrostatic withstand voltage, resistant to a power supply surge, and having improved long-term reliability is obtained by reducing current leakage through a threading dislocation portion. The semiconductor laser includes a substrate having a high dislocation region having a dislocation density of 1×105 cm−2 or... Agent: Leydig Voit & Mayer, Ltd

20100067559 - Laser diode device, optical apparatus and display apparatus: A laser diode device includes a first laser diode element, a second laser diode element and a third laser diode element having a longer lasing wavelength than the first and second 6 laser diode elements. The first, second and third laser diode elements are arranged in a package, and the... Agent: Mots Law, PLLC

20100061409 - Fiber laser: A fiber laser of an MOPA type includes an MO which is a laser oscillator for generating seed light, a PA which is a light amplifier connected to a rear stage of the MO, for amplifying and outputting laser light emitted from the MO, and a reflection device which is... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20100061407 - Figure eight fiber laser for ultrashort pulse generation: A polarization-maintaining figure eight (PMFE) fiber laser is configured to generate ultrashort (femtosecond) output pulses by intentionally inserting asymmetry (in the form of a phase bias) into the bi-directional loop of the fiber laser. The introduction of asymmetry (via an asymmetric coupler, splice, attenuator, fiber bend, multiple amplifying sections, or... Agent: Wendy W. Koba

20100061408 - Laser apparatus: Provided is a laser apparatus including: a DFB fiber laser 40 including, as an amplitude medium, a rare earth doped silica optical fiber codoped with a high concentration of aluminum; an optical feedback path 50 formed by a ring-shaped optical fiber; and an optical coupler 70 a) feeding back a... Agent: Jianq Chyun Intellectual Property Office

20100061410 - System and method for controlling nonlinearities in laser units: An optical system includes a launching component radiating a beam of light at a fixed power, a specialty component, which receives the beam and is configured with a transverse mode field diameter different from that one of the launching component, and a focusing component substantially losslessly coupled to the launching... Agent: Ipg Photonics Corporation

20100061411 - Method and apparatus for controlling carrier envelope phase: A chirped pulse amplification laser system. The system generally comprises a laser source, a pulse modification apparatus including first and second pulse modification elements separated by a separation distance, a positioning element, a measurement device, and a feedback controller. The laser source is operable to generate a laser pulse and... Agent: Hovey Williams LLP

20100061412 - Pump energy wavelength stabilization: In a method, a gain medium is provided having an absorption coefficient that varies with wavelength. An absorption coefficient curve of the absorption coefficient or a range of wavelengths comprises peaks and valleys. A pump module is operated to output pump energy at an operating wavelength within one of the... Agent: Westman Champlin & Kelly, P.A.

20100061413 - Laser driver circuit and laser display: A laser driver circuit comprising a current supply circuit for supplying a laser diode with a current is provided. The current supply circuit comprises a voltage-to-current converter circuit, a current output line for outputting the current generated by the voltage-to-current converter circuit, a current supply line connected to the laser... Agent: Crowell & Moring LLP Intellectual Property Group

20100061414 - Optical semiconductor device and driving method thereof: Objects are achieved by an optical semiconductor device comprising: a structure 61 including a substrate 50, a diffraction grating 52a, an active layer 54 and a refractive index control layer 60; and an laser element 100 including an electrode 92a for the active layer, an electrode 92b for the refractive... Agent: Fujitsu Patent Center C/o Cpa Global

20100061415 - Optical fibre material comprising silica-based glass with reduced photo darkening: The invention relates to a waveguide laser or amplifier material comprising a silica glass host material, one or more rare earth elements in total concentration CRE at. %, one or more network modifier elements selected from the group of tri- or penta-valent atoms of the periodic table of the elements... Agent: Buchanan, Ingersoll & Rooney PC

20100061416 - Gallery-mode microdisc system for electrically pumped optical sources: The invention concerns a gallery mode microdisc system for an electrically pumped optical source, the microdisc (1) being formed on one face of a substrate (2), the lower part of the microdisc being provided with an electrical contact referred to as the lower contact (4), the upper part of the... Agent: Pearne & Gordon LLP

20100061417 - Method for reducing capacitance and improving high frequency performance in vertical cavity surface emitting lasers (vcsels): A VCSEL structure is provided. The VCSEL structure comprises a substrate consisting of a III-V material. The structure may also include one or more conducting layers positioned on said substrate. There may be void spaces positioned between portions of the conducting layers to electrically isolate the portions. A method for... Agent: Turocy & Watson, LLP

20100061418 - Mounting surface-emitting devices: An optical emitter assembly is described in which one or more optical devices each having an emitting aperture at a surface thereof can be mounted on a carrier such that the plane of the emitting apertures with respect to a well defined reference plane can be precisely controlled. This enables... Agent: Jacobson Holman PLLC

20100054284 - Continuous-wave laser: A continuous wave Raman laser for producing visible laser output comprising: a resonator cavity; at least a first reflector and a second reflector said first and second reflectors being located at opposite ends of the resonator cavity; a laser gain medium located in the resonator cavity for generating a continuous... Agent: Knobbe Martens Olson & Bear LLP

20100054285 - all fiber mode locked fiber laser at one micron: Methods and systems for generating mode locked, femtosecond and picosecond laser pulses are disclosed, including generating electromagnetic radiation from a pump laser; coupling the pump laser electromagnetic radiation to a ring cavity comprising: a WDM coupler, a Ytterbium doped fiber, a first single mode fiber, a bandpass filter and dispersion... Agent: John Martin Taboada

20100054286 - Semiconductor diode pumped laser using heating-only power stabilization: A laser system such as a DPSS green laser uses a laser diode pump source that is specially selected so that the wavelength of diode source is centered around the optimal source wavelength, typically 808 nm, which produces the optimal green laser output from the system. Unlike prior systems in... Agent: Lariviere, Grubman & Payne, LLP

20100054287 - Method and system for laser-based high-speed digital marking of objects: Laser marking system and method are provided. A laser source is configured to supply a laser beam having a first optical intensity level and a respective beam cross-section. A spatial light modulator (SLM) is optically coupled to the laser source to receive the laser beam. The SLM is controlled to... Agent: Beusse Wolter Sanks Mora & Maire, P. A.

20100054288 - Method and device for reducing laser phase noise: The present invention relates to a method and device for reducing the phase noise of a laser signal from a laser source. This device comprises a first current generator for supplying a driving current to the laser source in view of producing the laser signal. A phase noise detector is... Agent: K&l Gates LLP

20100054289 - Solid-state laser: A method for assembling an optically pumped solid-state laser having an extended cavity is disclosed. The method comprises the steps of providing a casing, mounting a TEC and a base plate in the casing, and mounting a plurality of laser components on the base plate using a UV and heat... Agent: Buchanan, Ingersoll & Rooney PC

20100054290 - Surface emitting laser: a half cross section in which the nonconductive oxidized layer does not appear is present among radial half cross sections extending from a substantial center of the current injection opening area to an outer periphery of the surface emitting laser, which cross sections are interrupted within a region where a... Agent: Sughrue Mion, PLLC

20100054291 - Organic laser device: To provide a small and lightweight organic laser device which can be manufactured in a reproductive manner and from which laser light with a desired wavelength can be obtained. A first substrate provided with a light-emitting element having a light-emitting layer between a pair of electrodes and a second substrate... Agent: Eric Robinson

20100054292 - Semiconductor laser device and manufacturing method thereof: A first semiconductor laser element is formed on a surface of a substrate and has a first cavity facet. The first semiconductor laser element has a first recess in the first cavity facet except for at least a region where a first optical waveguide is formed. The first recess extends... Agent: Mots Law PLLC

20100054293 - Laser light source device and manufacturing method for manufacturing laser light source device: A manufacturing method for manufacturing a laser light source device, includes: providing a first laser element having a first emitter, a second laser element having a second emitter, and a reflection member; adjusting a relative angle between the first laser element and the reflection member; adjusting a relative angle of... Agent: Oliff & Berridge, PLC

20100054294 - Solid-state dye laser: To reduce the laser threshold by efficiently exciting a light-emitting body in a solid-state dye laser with light having high density, thereby facilitating emission of laser beams, and to miniaturize a solid-state dye laser including an excitation light source. A solid-state dye laser capable of emitting laser beams by efficiently... Agent: Eric Robinson

20100054295 - High pulse repetition rate gas discharge laser: A pulsed gas discharge laser operating at an output laser pulse repetition rate of greater than 4 kHz and a method of operating same is disclosed which may comprise a high voltage electrode having a longitudinal extent; a main insulator electrically insulating the high voltage electrode from a grounded gas... Agent: Matthew K. Hillman Cymer, Inc.

20100054296 - Terahertz wave generating apparatus and terahertz wave generating method: A terahertz wave generating apparatus includes an excitation light source for outputting an excitation light at a predetermined wavelength, an optical crystal being excited by an irradiation with the excitation light in order to generate a terahertz wave and terahertz wave amplifying means for repeatedly performing an optical parametric amplification... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100054297 - Optical element for gas laser and gas laser apparatus using the same: At least either of the light entering plane or the light exiting plane is parallel to the (111) crystal face of the CaF2 crystal and the laser beam entering from the entering plane passes through the plane located between the [111] axis and the first azimuth axis in the locus... Agent: Kratz, Quintos & Hanson, LLP