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| Number | Title | Issue Date |
| 8135053 | Laser crystal device The present disclosure relates to a laser crystal device (1) for short pulse lasers, comprising a container (4), the interior of which is sealed relative to the environment and which contains a technically pure atmosphere with windows (12, 13) i... | 03/13/2012 |
| 7991036 | Two-dimensional photonic crystal plane emission laser A two-dimensional photonic crystal plane emission laser of the invention includes a two-dimensional photonic crystal which has a two-dimensional photonic crystal area and a light reflecting area, and which selects a wavelength of light to be generated in an active l... | 08/02/2011 |
| 7970040 | Apparatus for incoherent combining of high power lasers for long-range directed-energy applications An embodiment of the invention includes an apparatus. The apparatus includes a plurality of lasers comprising a plurality of laser paths. The apparatus further includes an incoherent combining beam director in the plurality of laser paths. The apparatus also include... | 06/28/2011 |
| 7970039 | Laser apparatus In a first embodiment, the invention makes use of a Neodymium doped YAG (Nd:YAG) gain medium placed in an optical resonant cavity formed by two mirrors. Power extraction is maximized for a specific laser cavity. In particular the concave curvature on the rod ends co... | 06/28/2011 |
| 7903716 | Surface emitting semiconductor laser having an interference filter A surface emitting semiconductor laser includes a semiconductor chip (1), which emits radiation (12) and contains a first resonator mirror (3). A second resonator mirror (6) is arranged outside the semiconductor chip (1). The first... | 03/08/2011 |
| RE41457 | Wavemeter for gas discharge laser An optical configuration to illuminate an etalon in a laser wavemeter with a minimum level of light intensity. The system includes optical components to direct a portion of the laser output beam representing the entire cross section of the beam, through an etalon po... | 07/27/2010 |
| 7627017 | Laser amplifier and method of making the same The present invention includes a laser amplifier and a method of making the same. The laser amplifier of the present invention includes a gain medium layer having a first index of refraction, and a coupling layer optically coupled to the gain medium. In the various ... | 12/01/2009 |
| 7586971 | External-cavity laser light source apparatus and laser light emission module An external-cavity laser light source apparatus includes a plurality of laser light emission modules, each including a first mirror, a second mirror reflecting fundamental wave light toward the first mirror, a lasing medium emitting the fundamental wave light, a wav... | 09/08/2009 |
| 7539232 | Compact phase locked laser array and related techniques An electro-optical system includes a plurality of electromagnetic gain media having a corresponding plurality of apertures. The apertures are disposed in a predetermined spatial distribution. The system further includes at least one refracting surface disposed to in... | 05/26/2009 |
| 7440643 | Variable light controlling device and variable light controlling method A variable light controlling device comprising a substrate, an optical waveguide disposed on the substrate, a first heater and a second heater to change the optical waveguide's temperature is fabricated. And a total amount of the power supplied to the first and the ... | 10/21/2008 |
| 7436873 | Optical device and semiconductor laser oscillator In an optical device, a slab layer includes an active layer sandwiched between cladding layers. The slab layer has a periodic refractive index profile structure in a two-dimensional plane, as a two-dimensional slab photonic crystal structure, and a linear defect reg... | 10/14/2008 |
| 7433381 | InP based long wavelength VCSEL A long wavelength vertical cavity surface emitting laser having a substrate, a first mirror situated on the substrate, an active region situated on the first mirror, a second mirror situated on the active region. The first mirror may have several pairs of layers wit... | 10/07/2008 |
| 7425726 | Electroabsorption modulators and methods of making the same Electro-absorption modulators and methods of making the same are described. In one aspect, an electroabsorption modulator includes first and second electrodes, first and second cladding regions, an active region, and a tunnel junction structure. The first and second... | 09/16/2008 |
| 7426229 | Line narrowing module, light source of exposure apparatus comprising the same, and method of producing exposure light using line narrowing A line narrowing module includes an elliptical mirror, a diffraction grating disposed at a first focus of the mirror for separating an incident beam into different lines, and a laser beam dispersion and extraction unit. The laser beam dispersion and extraction unit ... | 09/16/2008 |
| 7415057 | Unstable optical resonator and laser device An unstable optical resonator for an optically active medium comprising a spherical back mirror and a spherical outcoupling mirror is proposed, and an outcoupling which is asymmetrical in relation to the optical axis takes place therein. ... | 08/19/2008 |
| 7406107 | Semiconductor spectroscopy system An optical power control system for a semiconductor source spectroscopy system controls power fluctuations in the tunable signal from the spectroscopy system and thus improves the noise performance of the system. This general solution has advantages relative to othe... | 07/29/2008 |
| 7394986 | Flat top optical filtering component The invention relates to wavelength-selective optical filters for allowing light of a narrow optical spectral band, centered around a wavelength (λc) to pass through them, while reflecting the wavelengths lying outside this band. According to the inventi... | 07/01/2008 |
| 7394837 | Traveling-wave linear cavity laser A linear cavity design to produce a traveling wave operation as in a ring laser without the ring cavity design. All fiber configurations may be used to implement fiber lasers based on the linear cavity design. ... | 07/01/2008 |
| 7382032 | Terahertz frequency band wavelength selector A terahertz (THz) frequency radiation source to emit radiation in a narrow wavelength band within a range of about 3 μm to 3000 μm. This source includes: a broad bandwidth emitter to generate a broad bandwidth emitted wavelength band within the wavelength range; a... | 06/03/2008 |
| 7382812 | Solid state laser device The transmittance of an etalon relative to an oscillating line having the wavelength of 1061.6 to 1062.2 nm by an Nd:YAG laser medium 3 is set to 0.9 or lower (the maximum value of the transmittance is 1.0). The oscillating line of the wavelength of 1061.6 to... | 06/03/2008 |
| 7376309 | Optical structure An optical structure comprising an optical resonator is provided. The optical resonator comprises a first set of nested closed optical regions, forming a distributed feedback resonator structure with a direction of radially alternating optical refractive index, and ... | 05/20/2008 |
| 7372886 | High thermal conductivity vertical cavity surface emitting laser (VCSEL) A light generating device such as a VCSEL includes a light generation layer, a top reflector, a bottom reflector, and a high thermal conductivity (HTC) layer between the light generation layer and the bottom reflector. The light generation layer is adapted to genera... | 05/13/2008 |
| 7369764 | Transmission line monitoring method and apparatus A transmission line monitoring apparatus includes a first optical coupling unit, a first optical dividing unit, a second optical coupling unit, a second optical dividing unit and a monitoring unit. The first optical coupling unit couples a down data signal with a fi... | 05/06/2008 |
| 7366221 | Laser apparatus and method of driving diffraction grating A laser apparatus is disclosed. The laser apparatus has a diffraction grating that receives laser light from a semiconductor laser, emits first order diffracted light having a predetermined wavelength to the semiconductor laser, and reflects zero-th order light, a r... | 04/29/2008 |
| 7359423 | Distributed feedback laser diode A semiconductor laser includes an active layer on an n-type InP substrate. A diffraction grating and a p-type InP cladding layer are above the active layer. The diffraction grating has at least one phase shift portion. Facets of the distributed feedback laser each h... | 04/15/2008 |
| 7352791 | Optical systems including wavefront correcting optical surfaces The present invention relates to optical systems, beam expanding assemblies, line narrowing modules, and lasers having refractive optical elements with wavefront correcting optical surfaces. The present invention enables the skilled artisan to provide optical system... | 04/01/2008 |
| 7339974 | Tunable semiconductor laser A tunable semiconductor laser includes gain medium, wavelength-selective element and a laser mode matching element. The wavelength-selective element comprises a first light absorbing plate operatively coupled to the laser mode matching element and provided with an a... | 03/04/2008 |
| 7336690 | Solid-state laser system A simple and high-reliability constitution provides a solid-state laser system that allows a high-output, long-pulse-width laser beam to be obtained. A solid-state laser system that includes a solid-state laser medium 1, a light source 2 for pum... | 02/26/2008 |
| 7327772 | Optical resonator with mirror structure suppressing higher order transverse modes An optical resonator including is designed is to degrade the ability of the resonator to support suppress higher order transverse spatial modes. The inventive optical resonator forces Higher higher order transverse modes to be fundamentally unstable in the inventive... | 02/05/2008 |
| 7321468 | Method and optical arrangement for beam guiding of a light beam with beam delay A method for beam guiding of a light beam generated by a light source to a target location along a path distance LS, comprises splitting the light beam on the path distance LS at least once into a first partial beam and a second partial beam, g... | 01/22/2008 |
| 7317536 | Spectral bandwidth metrology for high repetition rate gas discharge lasers A bandwidth meter apparatus and method for measuring the bandwidth of a spectrum of light emitted from a laser input to the bandwidth meter which may comprise an optical bandwidth monitor providing a first output representative of a first parameter which is indicati... | 01/08/2008 |
| 7317739 | Mode-locked laser using a mode-locking wavelength selective reflector In accordance with the invention, a mode-locked laser comprises an optical gain medium disposed within an optical cavity formed by a first reflector and a wavelength selective second reflector to achieve mode-locking operation. Advantageously, the wavelength reflect... | 01/08/2008 |
| 7317179 | Systems and methods to shape laser light as a homogeneous line beam for interaction with a film deposited on a substrate Systems and methods are disclosed for shaping and homogenizing a laser beam for interaction with a film. The shaping and homogenizing system may include a lens array and a lens that is positioned to receive laser light from the lens array and produce a respective el... | 01/08/2008 |
| 7317741 | Amplified spontaneous emission ducts Amplified spontaneous emission (ASE) ducts are disclosed for use with various gain media. An ASE duct may be configured and arranged to remove ASE from solid state or liquid gain media and transmit the ASE to an exterior optical medium. The refractive index of an AS... | 01/08/2008 |
| 7317529 | Aspects of producing, directing, conditioning, impinging and detecting spectroscopic electromagnetic radiation from small spots on samples Systems and methods for providing and enhancing electromagnetic radiation beam radial energy homogeneity and intensity vs. wavelength content, for reliably directing electromagnetic radiation emitted by a source thereof in a common direction, for achromatically redu... | 01/08/2008 |
| 7295653 | Apparatus, system, and method for optical pulse gain enhancement for high-finesse external cavity A passive optical resonator stores optical pulses within a cavity to increase the optical power level of input pulses via resonant reflections without the use of an internal optical gain medium. In one embodiment for a Compton backscattering system, the optical reso... | 11/13/2007 |
| 7277188 | Systems and methods for implementing an interaction between a laser shaped as a line beam and a film deposited on a substrate Systems and methods are disclosed for focusing a beam for an interaction with a film deposited on a substrate wherein the focused beam defines a short axis and a long axis. In one aspect, the system may include a detecting system to analyze light reflected from the ... | 10/02/2007 |
| 7266137 | Laser gas replenishment method Output beam parameters of a gas discharge laser are stabilized by maintaining a molecular fluorine component at a predetermined partial pressure using a gas supply unit and a processor. The molecular fluorine is subject to depletion within the discharge chamber. Gas... | 09/04/2007 |
| 7263259 | Multiple-source arrays fed by guided-wave structures and resonant guided-wave structure cavities A multiple source array including a guided-wave structure having a dielectric core and a cladding covering the dielectric core; and an array of dielectric-filled, guided-wave cavities in the cladding extending transversely from the dielectric core and forming an arr... | 08/28/2007 |
| 7260136 | Multiple laser cavity A method of using at least a part of a cavity for a first and at least one second laser includes providing a first laser beam to the part of the cavity, splitting the first beam into a first and a second part, splitting the first part into a third and a fourth part,... | 08/21/2007 |
