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| Number | Title | Issue Date |
| 8189644 | High-efficiency Ho:YAG laser A laser assembly and method of operating the assembly are described in which a pump beam is directed through an end-pumped solid-state laser gain medium four or more times. The pump beam is directed at a slight angle through a first end of the medium, reflects off t... | 05/29/2012 |
| 8073036 | Beam stabilized fiber laser A laser head generating ultrashort pulses is integrated with an active beam steering device in the head. Direct linkage with an application system by means of an adequate interface protocol enables the active device to be controlled directly by the application syste... | 12/06/2011 |
| 7995638 | High power, end pumped laser with off-peak pumping A laser configuration producing up to 100's of Watts of output is provided, based on a solid-state gain medium, a source of pump energy which is detuned from the maximum absorption wavelength for the gain medium, and optics arranged to deliver the pump energy throug... | 08/09/2011 |
| 7885311 | Beam stabilized fiber laser A laser head generating ultrashort pulses is integrated with an active beam steering device in the head. Direct linkage with an application system by means of an adequate interface protocol enables the active device to be controlled directly by the application syste... | 02/08/2011 |
| 7876802 | High gain tapered laser gain module The present invention describes an optically end-pumped laser gain module, comprising a gain medium which is pumped by a light beam that has a larger size on the input face of the medium than on its output face. ... | 01/25/2011 |
| 7639721 | Laser pumped tunable lasers A laser pumped tunable laser system is disclosed directed to achieving tunable outputs with high wall plug efficiencies. In particular, green laser pumped alexandrite lasers are discussed—both pulsed and CW—where the wall plug efficiencies of greater than 2% can... | 12/29/2009 |
| 7639722 | Multifaceted prism to cause the overlap of beams from a stack of diode laser bars An optical element for homogenizing and, possibly, concentrating the output from high-power two-dimensional semiconductor laser arrays, which has the basic shape of a convex-flat cylindrical lens with a facet cut into the convex surface for each individual semicondu... | 12/29/2009 |
| 7627016 | Laser pumped tunable lasers A laser pumped tunable laser system is disclosed directed to achieving tunable outputs with high wall plug efficiencies. In particular, green laser pumped alexandrite lasers are discussed—both pulsed and CW—wherein the wall plug efficiencies of greater than 2% c... | 12/01/2009 |
| 7515626 | Light source capable of lasing that is wavelength locked by an injected light signal Various methods, systems, and apparatuses are described in which a light source (101) capable of lasing is wavelength locked by an injected light signal. The light source (101) capable of lasing, such as a Fabry-Perot laser diode, may have antireflecti... | 04/07/2009 |
| 7486714 | Pump laser integrated vertical external cavity surface emitting laser Provided is a vertical external cavity surface emitting laser (VECSEL) in which a pump laser is integrated with the rest of the VECSEL as a single body. The VECSEL includes: a first active layer that has a quantum well structure and generates light with a first wave... | 02/03/2009 |
| 7428257 | Apparatus for optical pumping of a laser-active solid body An apparatus for optically pumping a laser-active solid body with pumping light coupled into the solid body through an end surface of the solid body is disclosed. The apparatus includes a laser-active solid body including an end surface though which pumping light is... | 09/23/2008 |
| 7408971 | Longitudinally pumped solid state laser and methods of making and using A laser apparatus for producing a laser light beam can include a gain medium; a pump light source to provide a pump light beam to the gain medium; a first reflector disposed between the first gain medium and the first pump light source and spaced apart from a gain p... | 08/05/2008 |
| 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 |
| 7376296 | Optical multiplexer The invention provides an optical multiplexing device comprising: a plurality of optical sources with integrated collimators (31-37) whose output beams are combined by mirrors (41-47) or other beam deflecting elements, which combine the b... | 05/20/2008 |
| 7358666 | System and method for sealing high intensity discharge lamps In accordance with certain embodiments, the present technique includes a system for sealing a lamp including a thermal shield and a thermally susceptible enclosure disposed adjacent the thermal shield. The thermal shield has a first receptacle adapted to receive a f... | 04/15/2008 |
| 7348565 | Illumination system particularly for microlithography There is provided a projection exposure apparatus for microlithography using a wavelength less than or equal to 193 nm. The apparatus includes an optical element with a pupil raster element, and a projection objective with a real entrance pupil. The optical element ... | 03/25/2008 |
| 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 |
| 7329886 | EUV illumination system having a plurality of light sources for illuminating an optical element There is provided an illumination system. The illumination system includes a first light source and a second light source, each of which are for providing light having a wavelength ≦193 nm, and an optical element. The first light source illuminates a first area of... | 02/12/2008 |
| 7317874 | Adaptive optical transceiver for fiber access communications An optical module includes a transmitter optical sub-assembly comprising a transmitter configured to emit a multi-longitudinal-mode (MLM) spectrum signal having an emission spectrum comprising a plurality of distinct narrow-spectrum peaks each corresponding to a lon... | 01/08/2008 |
| 7288086 | High-efficiency, side-pumped diode laser system An apparatus for cutting or ablating hard tissue, includes an optical cavity; a gain medium disposed within the optical cavity; a diode light pump disposed within the optical cavity and optically aligned to light pump the gain medium to generate laser light. The gen... | 10/30/2007 |
| 7286283 | Optical fiber coupling arrangement Apparatus for optically pumping a clad amplifier fiber includes one or more transmission fibers arranged and configured to insert pump-light from a pump light source such as a diode-laser into the cladding of the amplifier fiber. The pump light propagates through th... | 10/23/2007 |
| 7286587 | Holmium doped 2.1 micron crystal laser A Ho:YAG crystal laser is disclosed which is doped with less than 2% holmium to reduce the lasing threshold and up-conversion, thereby increasing the operating efficiency of the laser. The laser does not need sensitizer ions so energy mismatches introduced by the se... | 10/23/2007 |
| 7274723 | Method for amplifying a solid-state laser Conventionally, a laser beam is amplified by making a single pass through an amplifier but the laser beam emitted from the oscillator generally has low energy, so the energy stored in the amplifier cannot be fully extracted and only low laser output power and overal... | 09/25/2007 |
| 7256931 | Optical amplifying device In an optical amplifying device, an optical beam passes multiple times through a grazing-incidence bounce amplifier, accessing different parts (G1,G2) of the gain region on each transit. This provides improved characteristics in beam quality, with high... | 08/14/2007 |
| 7248667 | Illumination system with a grating element An illumination system, particularly for wavelengths ≦100 nm, with an object plane and a field plane, comprises a grating element and a physical diaphragm in a diaphragm plane, which is arranged downstream to the grating element in the beam path from the object pl... | 07/24/2007 |
| 7233027 | Arrangement comprising at least two different electronic semiconductor circuits The invention relates to an arrangement comprising at least two different electronic semiconductor circuits (HS) in which each of the semiconductor circuits (HS) is a component made of semiconductor material and which has an electrically active surface and electroni... | 06/19/2007 |
| 7203214 | Off-peak optical pumping of yttrium orthovanadate A laser includes an Nd:YVO4 crystal end-pumped with diode-laser light having a wavelength at which the absorption coefficient for Nd:YVO4 is less than about 0.35 (35%) of the absorption coefficient at 808 nm. ... | 04/10/2007 |
| 7186983 | Illumination system particularly for microlithography There is provided a projection objective for a projection exposure apparatus that has a primary light source for emitting electromagnetic radiation having a chief ray with a wavelength ≦193 nm. The projection objective includes an object plane, a first mirror, a s... | 03/06/2007 |
| 7187703 | Intracavity sum-frequency mixing laser Provided is a diode-pumped solid-state laser adapted for an intracavity sum-frequency mixing for generating a laser radiation of a visible wavelength range by performing a sum-frequency mixing of two laser inputs in a laser resonant cavity. A pair of laser resonator... | 03/06/2007 |
| 7181105 | Method for adjusting alignment of laser beams in combined-laser-light source where the laser beams are incident on restricted area of light-emission end face of optical fiber A combined-laser-light source includes: a plurality of semiconductor lasers; an optical fiber; and an optical system which converges a bundle of laser beams emitted from the plurality of semiconductor lasers, and makes the converged bundle of the laser beams enter t... | 02/20/2007 |
| 7170919 | Diode-pumped solid-state laser gain module A laser gain device (10) holds a laser slab (60) which is pumped by pump energy from at least one diode array assembly (24). An angle at which pump energy from the diode array assembly (24) impinges the laser slab (60) is adjustabl... | 01/30/2007 |
| 7154919 | Optical fiber laser and laser light emitting method An optical fiber laser includes a resonator comprising an erbium-doped glass fiber serving as a gain medium and a pumping light source that launches pumping light into the erbium-doped glass fiber. The pumping light source emits pumping light of a wavelength of 980 ... | 12/26/2006 |
| 7142285 | Illumination system particularly for microlithography There is provided an illumination system for microlithography with wavelengths≦193 nm. The illumination system includes a primary light source, a first optical component, a second optical component, an image plane, and an exit pupil. The first optical component tr... | 11/28/2006 |
| 7126137 | Illumination system with field mirrors for producing uniform scanning energy This invention relates to an Ilumination system for scanning lithography especially for wavelengths≦193 nm, particularly EUV lithography, for the illumination of a slit, comprising at least one field mirror or at least one field lens and being characterized in tha... | 10/24/2006 |
| 7126976 | Solid state lasers and a method for their production The present invention relates to a solid-state laser comprising: a) a semiconductor pump laser, b) a lens integrated on the surface of said semiconductor pump laser, c) a packaging material consisting essentially of a spin-on glass material, wherein the spin-on glas... | 10/24/2006 |
| 7120184 | Phasing surface emitting diode laser outputs into a coherent laser beam A system for generating a powerful laser beam includes a first laser element and at least one additional laser element having a rear laser mirror, an output mirror that is 100% reflective at normal incidence and | 10/10/2006 |
| 7109497 | Illumination system particularly for microlithography There is provided an illumination system, particularly for microlithography with wavelengths ≦193 nm. The illumination system includes a primary light source, a first optical component, a second optical component, an image plane, and an exit pupil. The first optic... | 09/19/2006 |
| H2161 | Solid state laser pumped by visible light-emitting-diode Visible light-emitting-diodes (LEDs) are inexpensive, provide emissions in many wavelengths and are powerful enough to pump solid state laser rods. The LED light is directed to the laser rod (laser gain element). The LED wavelength chosen matches the absorption spec... | 07/04/2006 |
| 7071476 | Illumination system with a plurality of light sources There is provided an illumination system for EUV-wavelengths. The illumination system includes a plurality of EUV-light sources and an optical unit combining the plurality of EUV-light sources. ... | 07/04/2006 |
| 7046712 | Laser resistant to internal ir-induced damage Co-doping the gain medium of a diode-pumped infrared laser to make the laser resistant to long-term degradation from high-intensity internal infrared radiation is disclosed. Co-doping the gain medium with ions such as Cr3+ and Ce3+ that make th... | 05/16/2006 |
