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Coherent light generators

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
07/10/2014 > 5 patent applications in 4 patent subcategories.

20140192827 - Resonator, variable wavelength optical filter, and variable wavelength laser diode: A variable wavelength diode according to the inventive concept includes a resonator and a plurality of cylindrical lenses. The resonator includes slab waveguides of which resonance lengths are different from each other. The slab waveguides are disposed on a planar light wave circuit (PLC). Thus, the variable wavelength diode realizes... Agent: Electronics And Telecommunications Research Institute

20140192828 - Tunable laser and photoacoustic device including the same: A tunable laser includes a resonator including a highly reflecting mirror and a partially reflecting mirror; a gain medium disposed in the resonator; a birefringence filter disposed in the resonator; and an excitation device that excites the gain medium. In the tunable laser, light that passes through the birefringence filter... Agent: Canon Kabushiki Kaisha

20140192829 - Multi-crystal frequency tripler for third harmonic conversion: An optical system includes a laser source operable to output a laser beam at a fundamental wavelength and a frequency conversion system. The frequency conversion system includes a frequency doubler module including a first plurality of nonlinear optical crystals and a frequency polarization tripler module including a second plurality of... Agent:

20140192830 - Wavelength locking of a laser device: There is discussed an optical system comprising a laser device that outputs a divergent light beam. A first portion of the divergent light beam, including a central portion, passes through an etalon device, which acts as a wavelength discriminator, and then the central portion is incident on a first monitor... Agent: Emcore Corporation

20140192832 - Electro-optical module: An electro-optical module is provided, which includes: a substrate having a first surface with a groove and an opposite second surface; a plurality of support members disposed on the first surface of the substrate; at least an electro-optical element having opposite active and non-active surfaces and disposed in the groove... Agent:

07/03/2014 > 11 patent applications in 10 patent subcategories.

20140185634 - Laser apparatus and control method therefor: The present invention uses a laser apparatus capable of selecting a wavelength of light to be outputted from a plurality of wavelengths, including: a branching unit which is formed of a polarizer and is configured to branch an optical path formed in a resonator including a reflecting unit having a... Agent:

20140185635 - Methods and apparatus for broadband frequency comb stabilization: Feedback loops can be used to shift and stabilize the carrier-envelope phase of a frequency comb from a mode-locked fibers laser or other optical source. Compared to other frequency shifting and stabilization techniques, feedback-based techniques provide a wideband closed-loop servo bandwidth without optical filtering, beam pointing errors, or group velocity... Agent:

20140185636 - Modulation of vertical cavity laser (vcsel) for enhanced range of multi-modal fiber communication: Technologies are described for enabling VCSELs to transmit phase or frequency modulated signals, which may have a substantially smaller transmission bandwidth and are more robust to transmission in a highly dispersive media such as multi-mode fibers. By applying an electric, magnetic, or electromagnetic field across one or more reflector layers... Agent: Empire Technology Development LLC

20140185637 - Method and apparatus for active voltage regulation in optical modules: A method and apparatus for active voltage regulation in optical modules utilize a voltage regulator to change the supply voltage provided to laser diode driver and receiver electronics to optimize module performance over temperature. The ambient temperature of the module is monitored. The outputs of the voltage regulator are controlled... Agent:

20140185638 - Optical module: There are provided an optical module including a semiconductor laser including a P-side electrode and an N-side electrode, and a semiconductor laser driver circuit that drives the semiconductor laser so as to output an optical signal from the semiconductor laser according to a pattern of a differentially transmitted digital electric... Agent: Sae Magnetics (h.k.) Ltd.

20140185639 - Group iii-v substrate material with thin buffer layer and methods of making: A substrate comprises a Group III-V material having an upper surface and a buffer layer having a thickness of not greater than about 1.3 μm and overlying the upper surface of the substrate. A plurality of optoelectronic devices formed on the substrate having a normalized light emission wavelength standard deviation... Agent: Saint-gobain Cristaux Et Detecteurs

20140185640 - Enhanced optical gain and lasing in indirect gap semiconductor thin films and nanostructures: Structures and methodologies to obtain lasing in indirect gap semiconductors such as Ge and Si are provided and involves excitonic transitions in the active layer comprising of at least one indirect gap layer. Excitonic density is increased at a given injection current level by increasing their binding energy by the... Agent:

20140185641 - Optical semiconductor device: An optical semiconductor device of one embodiment includes: a first semiconductor layer of a first conductivity type; an active layer provided on the first semiconductor layer and has a ring- or disk-like shape; a second semiconductor layer of a second conductivity type that is provided on the active layer and... Agent: Kabushiki Kaisha Toshiba

20140185642 - Catalytic generation of metastable singlet oxygen: Singlet oxygen metastables can be formed. A catalytic coating is formed on an interior surface of a flow reactor, and an oxygen containing species is flowed into the flow reactor to produce singlet oxygen metastables by a chemical reaction in the presence of the catalytic coating.... Agent: Physical Sciences, Inc.

20140185643 - Pulsed bias current for gain switched semiconductor lasers for amplified spontaneous emission reduction: Gain switched laser diode pulses are used as seed pulses for optical pulse generation. ASE is reduced by applying a prebias to the laser diodes at an amplitude less than that associated with a laser diode threshold. An electrical seed pulse having an amplitude larger than that associated with laser... Agent: Nlight Photonics Corporation

20140185644 - Spatially stable high brightness fiber: Optical fibers that provide stable output beam sizes have core refractive indices that decrease non-monotonically from a core center to a core/cladding interface. A maximum refractive index of the core is situated at a radius of between about ½ and ¾ of the core radius so that a core center... Agent: Nlight Photonics Corporation

06/26/2014 > 9 patent applications in 6 patent subcategories.

20140177659 - Semiconductor laser device: A laser device (100) includes a laser (110; 210; 310; 410; 510) in turn including at least one Distributed Bragg Reflector (DBR) section (111), at least one phase section (112) and at least one gain section (113), further including a laser control element (150), a feedback control element (140) and... Agent: Finisar Sweden Ab

20140177660 - Wavelength stabilization: Systems and methods of the invention generally relate to feedback loops for wavelength stabilization. According to certain aspects, a method of the invention includes filtering light through a tunable filter configured to deliver a target wavelength of light, measuring the wavelength of the filtered light, detecting a change between the... Agent: Volcano Corporation

20140177661 - Pulse shaping device and pulse shaping method: There is provided a pulse shaping device including a pulse generator configured to generate pulsed light by using a semiconductor laser for emitting light of a predetermined wavelength, and an optical member provided in a subsequent stage of the pulse generator and configured to compress a pulse time width of... Agent: Sony Corporation

20140177662 - Cooling device and semiconductor laser device: There is provided a semiconductor laser device including a plurality of members constituting a first group and a second group in each of which a semiconductor laser element is incorporated, a cooling jacket having, on a surface of the cooling jacket, a first region in which the member of the... Agent: Sony Corporation

20140177663 - Semiconductor emitter and method for producing useful light from laser light: A semiconductor emitter (1; 12; 14; 18; 21; 23; 25; 27; 30; 32; 34), comprising an amplifier medium (2) and at least one waveguide (3, 4) arranged at the amplifier medium (2), wherein at least one light coupling-out region (10; 13; 15; 19; 20; 22; 24; 26a-e; 33; 35) is... Agent:

20140177664 - Circuit arrangement for operating n parallel-connected strings having at least one semiconductor light source: A circuit arrangement may include an input for coupling to a supply voltage; n semiconductor light source units comprising a driver device; wherein the units are coupled in parallel, wherein each driver device comprises a PWM controller. A respective controller is designed to provide a PWM signal at a respectively... Agent: Osram Gmbh

20140177665 - Laser: A laser includes a total reflective mirror, an output mirror, a discharge lamp, and an active laser medium. The total reflective mirror, the output mirror, and the discharge lamp define a resonant cavity. The active laser medium is filled in the resonant cavity. The total reflective mirror includes a body,... Agent: Tsinghua University

20140177666 - Laser: A laser includes a total reflective mirror, an output mirror, a discharge lamp, and an active laser medium. The total reflective mirror, the output mirror, and the discharge lamp define a resonant cavity. The active laser medium is filled in the resonant cavity. The total reflective mirror includes a microstructure.... Agent: Tsinghua University

20140177667 - Laser: A laser includes a total reflective mirror, an output mirror, a discharge lamp, and an active laser medium. The total reflective mirror, the output mirror, and the discharge lamp define a resonant cavity. The active laser medium is filled in the resonant cavity. The total reflective mirror includes a body,... Agent: Tsinghua University

06/19/2014 > 8 patent applications in 7 patent subcategories.

20140169390 - Wavelength-stabilized microcrystal laser: A microcrystal laser assembly including a gain-crystal includes a frame having a high thermal conductivity. The frame has a base with two spaced apart portions extending from the base. The gain-crystal has a resonator output minor on one surface thereof. The gain-crystal is supported on the spaced-apart portions of the... Agent: Coherent Gmbh

20140169391 - Laser diode assembly: A laser diode assembly includes: a mode-locked laser diode device; a diffraction grating that configures an external resonator, returns primary or more order diffracted light to the mode-locked laser diode device, and outputs 0-order diffracted light outside; and an imaging section provided between the mode-locked laser diode device and the... Agent:

20140169392 - Laser emitter module and laser detecting system to which the laser emitter module is applied: A laser emitter module may include a first laser emitter configured to output first laser beam having a first radiation angle by receiving first input laser beam and a second laser emitter configured to output second laser beam having a radiation angle different from the first radiation angle by receiving... Agent: Electronics And Telecommunications Research Institute

20140169393 - Cooling arrangement for laser-active solid-state materials, laser arrangement and method for cooling a laser-active solid-state material: Cooling arrangement for laser-active solid-state materials, laser arrangement and method for cooling a laser-active solid-state material. The invention relates in particular to a cooling arrangement for the active liquid cooling of a laser-active solid-state material. In order to achieve an advantageous cooling effect, it is proposed to use a nozzle... Agent: A.r.c. Laser Gmbh

20140169394 - Macro-channel water-cooled heat-sink for diode-laser bars: A water-cooled heat-sink for a diode-laser bar includes a copper-cooling-unit having an integral mount thereon for the diode-laser bar. The copper-cooling-unit is attached to a steel base-unit. The base-unit and the cooling-unit are cooperatively configured such that at least one cooling-channel is formed in the cooling-unit by the attachment of... Agent: Coherent, Inc.

20140169395 - Solid laser apparatus: A solid laser apparatus which includes: two reflection elements for forming an oscillator; a plate-shaped gain medium being disposed between the two reflection elements, thereby augmenting a stimulated emission light in a thickness-wise direction; a doughnut- or deformed-doughnut-type planar waveguide being disposed so as to make an inner peripheral face... Agent: Inter-university Research Institute Corporation National Institutes Of Natural Sciences

20140169396 - Semiconductor laser device: A semiconductor laser device capable of high output is provided. A semiconductor laser diode includes: a substrate; and a semiconductor stacked structure, which is formed on the substrate through crystal growth. The semiconductor stacked structure includes: an n-type (Alx1Ga1-x1))0.51In0.49P cladding layer and a p-type (Alx1Ga(1-x1))0.51In0.49P cladding layer; an n-side Alx2Ga(1-x2)As... Agent: Rohm Co., Ltd.

20140169397 - Laser: A vertical cavity surface emitting laser (VCSEL) configured to operate in a gain switching regime includes a cavity that is terminated by reflectors at both ends for enabling a standing wave of optical radiation therebetween. The cavity comprises at least one quantum well, each of the quantum wells located at... Agent: Oulun Yliopisto

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