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| Number | Title | Issue Date |
| 8014433 | 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... | 09/06/2011 |
| 8000371 | Vertical surface emitting semiconductor device A semiconductor light emitting device includes a pump light source, a gain structure, and an out-coupling mirror. The gain structure is comprised of InGaN layers that have resonant excitation absorption at the pump wavelength. Light from the pump light source causes... | 08/16/2011 |
| 7961771 | High-gain diode-pumped laser amplifier A laser amplifier includes a laser active slab with a source of pump power to amplify an input laser beam, the laser active slab including a block of laser active material having opposed lateral faces defining a wedge lateral dihedral angle specified to minimize par... | 06/14/2011 |
| 7848379 | LED-based optical pumping for laser light generation Laser light generating solutions are provided that use one or more light emitting diodes to optically pump a laser light generating structure. The laser light generating structure can include organic or inorganic laser material. The light emitting diodes can be loca... | 12/07/2010 |
| 7643530 | High-power external-cavity optically-pumped semiconductor lasers External-cavity optically-pumped semiconductor lasers (OPS-lasers) including an OPS-structure having a mirror-structure surmounted by a surface-emitting, semiconductor multilayer (periodic) gain-structure are disclosed. The gain-structure is pumped by light from dio... | 01/05/2010 |
| 7636379 | Pumping system for a laser source and laser source comprising such a pumping system A pumping system for a laser source includes a pump diode that emits a pump beam having a central wavelength that varies with temperature. A selective mirror having a plurality of spectral reflectivity peaks, corresponding to a plurality of predetermined wavelengths... | 12/22/2009 |
| 7633990 | Multi-wavelength pump method for improving performance of erbium-based lasers A method for increasing the efficiency of generating lasers by pumping two separate wavelengths into an erbium-based medium to populate the 4I11/2 state and depopulate the 4I13/2 state. A first excitation wavelength region... | 12/15/2009 |
| 7609742 | Star configuration optical resonator An optical resonator has an internal cavity with an output coupler, an end mirror, and one or more active mirror amplifiers (AMAs) that are arranged in a manner to form a laser radiation propagation path within the cavity which substantially has the form of a star p... | 10/27/2009 |
| 7606283 | Laser A laser device and a method of pumping a laser gain medium (R) comprise directing pulses of laser light from a pump laser (10) to a series of separate locations (11, 12, 13, 14, 15, 16 and 17) arranged longitudinally along the gain medium (R) in... | 10/20/2009 |
| 7602832 | Surface emitting laser aligned with pump laser on single heat sink A vertical external cavity surface emitting laser is provided that is integrally mounted on a single heat sink together with a pump laser. In the surface emitting laser, a laser chip has a gain structure to emit light at a predetermined wavelength and it is disposed... | 10/13/2009 |
| 7542501 | Laser system comprising a number of longitudinally pumped laser-active solid bodies The aim of the invention is to obtain a laser system with the highest possible power that operates as stably as possible. This object is achieved in the case of a laser system by the laser radiation field passing through at least two laser-active solid bodies of ide... | 06/02/2009 |
| 7529287 | Systems and methods for optical pumping using depolarizing filters An optical system comprises optical pump lasers, depolarizing filters and a multiplexer. A plurality of optical pump lasers generates a plurality of initial optical signals at different wavelengths. A plurality of depolarizing filters depolarize the plurality of ini... | 05/05/2009 |
| 7526009 | End-pumped vertical external cavity surface emitting laser There is provided an end-pumped vertical external cavity surface emitting laser (VECSEL) in which a pump laser beam is incident on a laser chip at a right angle. In the external cavity surface emitting laser, a laser chip package is provided with a laser chip emitti... | 04/28/2009 |
| 7502404 | Optical pumping method for gain-media with polarization sensitive absorption A method for optically pumping a gain-medium with partially polarized or unpolarized pump-light having a wavelength at which that gain-medium has an absorption that is dependent on the polarization plane of the pump-light is disclosed. The pump-light is directed int... | 03/10/2009 |
| 7469001 | Mid-IR optically pumped semiconductor laser A waveguide mode isolation layer added between the active region and the heat sink bonding material of an optically pumped semiconductor laser isolates the optical mode from the bonding material. ... | 12/23/2008 |
| 7440480 | Tetravalent chromium doped laser materials and NIR tunable lasers A method is described to improve and produce purer Cr4+-doped laser materials and lasers with reduced co-incorporation of chromium in any other valence states, such as Cr3+, Cr2+, Cr5+, and Cr6+. The method incl... | 10/21/2008 |
| 7435983 | Device for injecting electromagnetic radiation into a reactor Device for injecting electromagnetic radiation into a reactor and a reactor comprising this device A device for injecting electromagnetic radiation into a reactor for carrying out free-radical gas-phase reactions and a reactor comprising such a device are des... | 10/14/2008 |
| 7430231 | Vertical cavity surface emitting laser (VCSEL) arrays pumped solid-state lasers Solid-state lasers pumped by incoherent or partially coherent, monochromatic light sources such as high power VCSEL arrays. Efficient and uniform injection of pumping energy into gain medium is achieved through spectral match of the pump source with the gain medium ... | 09/30/2008 |
| 7421166 | Laser spark distribution and ignition system A laser spark distribution and ignition system that reduces the high power optical requirements for use in a laser ignition and distribution system allowing for the use of optical fibers for delivering the low peak energy pumping pulses to a laser amplifier or laser... | 09/02/2008 |
| 7418024 | High power vertical external cavity surface emitting laser Provided is a vertical external cavity surface emitting laser (VECSEL) including: a bottom DBR mirror formed on a substrate; an RPG layer formed on the bottom DBR layer; a capping layer formed on the RPG mirror; an optical pump irradiating a pump beam onto a surface... | 08/26/2008 |
| 7413847 | Semiconductor-type processing for solid-state lasers The present invention includes a method of fabricating an optically-pumped disk-array solid-state laser amplifier having one or more disks, wherein one or more of the one or more disks having two opposed surfaces, including the steps of patterning a photoresist mask... | 08/19/2008 |
| 7408972 | Optically pumped semiconductor laser device An optically pumped semiconductor laser device having a surface-emitting vertical emission region (1) and at least one monolithically integrated pump radiation source (2) for optically pumping the vertical emission region (1). The semiconductor ... | 08/05/2008 |
| 7408970 | Optically pumped external-cavity semiconductor laser with multiple gain structures A laser-resonator terminated by two end mirrors is folded by a plurality of OPS-structures and a plurality of fold-mirrors. The OPS-structures are energized by focused radiation from diode-laser bars. The fold-mirrors are configured and arranged with respect to the ... | 08/05/2008 |
| 7406109 | Hand held laser for medical treatment A hand held laser for treating a skin condition includes a housing comprising a first end, a second end and a cavity therein wherein the cavity includes a substantially light reflective surface and wherein the housing comprises at least one fin extending from an ext... | 07/29/2008 |
| 7406108 | Vertical external cavity surface emitting laser (VECSEL) The VECSEL includes: a heat spreader dissipating generated heat; a laser chip that is disposed on the heat spreader and is excited by a pump beam of a predetermined wavelength to emit a beam of a first wavelength; a Second Harmonic Generation (SHG) crystal that is d... | 07/29/2008 |
| 7388709 | Multiple path infrared energy source A multiple path light source has a first and second laser source that generate low power continuous wave laser beam at wavelength λ1 and λ2 respectively. A pump laser source generates a high power pulsed narrow linewidth laser beam at wavelength λ0. A first pair ... | 06/17/2008 |
| 7379486 | Technique for optically pumping alkali-metal atoms using CPT resonances Systems and methods for optically pumping alkali-metal atoms using Coherence Population Trapping (CPT) resonances are disclosed. An illustrative push-pull optical pumping system for inducing CPT resonances in a resonance cell containing an admixture of alkali-metal ... | 05/27/2008 |
| 7379488 | External cavity dual wavelength laser system The number and type of quantum wells in a multi-layer gain structure of an external cavity surface emitting laser (VECSEL) are controlled to provide output light of more than one coherent wavelength. The number and type of layers in a multiplayer mirror provides a d... | 05/27/2008 |
| 7376164 | Vertical cavity surface emitting semiconductor laser, light emission device, and optical transmission system A semiconductor laser is disclosed with which a VCSEL can be constituted with a simplified configuration for optical transmission at a transmission rate higher than 10 Gbps. The semiconductor laser includes a resonator including a first active region able to emit li... | 05/20/2008 |
| 7372056 | LPP EUV plasma source material target delivery system An EUV light generation system and method is disclosed that may comprise a droplet generator producing plasma source material target droplets traveling toward the vicinity of a plasma source material target irradiation site; a drive laser; a drive laser focusing opt... | 05/13/2008 |
| 7372877 | Fiber laser unit Fiber laser unit 1 comprises a plurality of fiber lasers 2 and 3 that generate laser beams by exciting a laser active substance inside cores 2a and 3a by exciting light, propagate the laser beams inside the cores 2... | 05/13/2008 |
| 7369582 | High-power fiber laser amplifier and fiber laser oscillator A high-power fiber laser amplifier with a laser wavelength of about 1060 to 1100 nm and an average laser power of more than about 500 W and an almost diffraction-limited beam quality (M2 | 05/06/2008 |
| 7361978 | Laser diode packaging A laser diode package includes a heat sink, a laser diode, and an electrically nonconductive (i.e. insulative) substrate. The laser diode has an emitting surface and a reflective surface opposing the emitting surface. The laser diode further has first and second sid... | 04/22/2008 |
| 7360903 | Light source device, method for manufacturing light source device, and projection type display apparatus Exemplary embodiments of the invention provide a light source device to cool a solid-state light source at a high efficiency even in a case where a large quantity of heat has developed from the solid-state light source including a minute heat generation region. A li... | 04/22/2008 |
| 7359413 | Diamond-cooled solid-state laser A diode-pumped solid state laser, e.g., in a side-pumped or end-pumped configuration, including a lasing medium (30, 40, 62) comprising at least one surface (41) through which the laser is pumped, and at least one diamond plate (32, 42, 64) in t... | 04/15/2008 |
| 7352784 | Laser burst boosting method and apparatus Methods and apparatus for managing thermal loads on a laser gain medium and for boosting the output power of a diode pumped laser are disclosed. The short-term average pumping power to the gain medium is increased, to provide a burst of pumping energy to the laser g... | 04/01/2008 |
| 7352790 | Method and apparatus for producing an eye-safe laser A lasing apparatus includes a laser medium and a pump source. The laser medium includes one of a Holmium-doped fluoride crystal or a Holmium-doped fluorozirconate ZBLAN glass fiber. The pump source generates pulses that resonantly pump the laser medium such that the... | 04/01/2008 |
| 7352949 | Fiber used in wideband amplified spontaneous emission light source and the method of making the same The present invention relates to a fiber having a core of crystal fiber doped with chromium and a glass cladding. The fiber has a gain bandwidth of more than 300 nm including 1.3 mm to 1.6 mm in optical communication, and can be used as light source, optical amplifi... | 04/01/2008 |
| 7346091 | High energy solid-state laser with offset pump and extraction geometry A laser system and method. The inventive laser includes an annular gain medium; a source of pump energy; and an arrangement for concentrating energy from the source on the gain medium. In a more specific implementation, a mechanism is included for rotating the gain ... | 03/18/2008 |
| 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 |
