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Coherent Light Generators > Particular Active Media Particular Active MediaParticular Active Media patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.10/18/07 - 20070242713 - Laser based on quantum dot activated media with forster resonant energy transfer excitation A laser gain medium. The novel laser gain medium includes a host material, a plurality of quantum dots dispersed throughout the host material, and a plurality of laser active ions surrounding each of the quantum dots. The laser active ions are disposed in close proximity to the quantum dots such ... 08/30/07 - 20070201522 - Densely stacked and strain-compensated quantum dot active regions Embodiments provide a quantum dot active structure and a methodology for its fabrication. The quantum dot active structure includes a substrate, a plurality of alternating regions of a quantum dot active region and a strain-compensation region, and a cap layer. The strain-compensation region is formed to eliminate the compressive strain ... 07/05/07 - 20070153850 - Doped stoichiometric lithium niobate and lithium tantalate for self-frequency conversion lasers In accordance with the present invention, a crystal laser material that is suitable for self doubling is presented. A crystal according to the present invention includes a stoichiometric lithium niobate crystal isomorph host material doped with at least one laser ion. In some embodiments, the stoichiometric lithium niobate crystal isomorph ... 05/31/07 - 20070121689 - Methods for producing diode-pumped micro lasers A miniaturized laser package includes a modern LDP, modified to accept a solid state microchip assembly pumped by the diode laser. The microchip assembly is added to standard LDPs containing laser diodes mounted on heatsinking shelves by affixing a second shelf to mount and heatsink the microchip assembly. Standard packages ... 05/10/07 - 20070104236 - Semiconductor laser and method of manufacturing the same A semiconductor laser manufactured by selective MOVPE growth, in which the lattice relaxation of recombination layers grown on large width portions is suppressed, the leak current is suppressed, and the reliability is high. When a semiconductor layer is manufactured by selective MOVPE growth, a DH mesastripe (6) is epitaxially grown ... 05/03/07 - 20070098029 - System for emission of electromagnetic radiation, and method for making A device for emission of electromagnetic radiation comprises a source of atomic particles and a collector disposed to receive atomic particles from the source. The collector comprises an emission medium, the medium comprising a crystal having a spatial dimension in the range from about 10 nanometers to about 50 micrometers, ... 04/26/07 - 20070091950 - Inorganic compound, composition and molded body containing the same, light emitting device, and solid laser device wherein each of the Roman numerals in the parentheses represents the valence number of ion; each of A1, A2, and A3 represents the element at the A site; B represents the element at the B site; each of C1 and C2 represents the element at the C site; each of ... 04/26/07 - 20070091949 - Solid-state laser apparatus having sintered polycrystalline inorganic gain medium In a laser-diode-excited laser apparatus: an excitation light source realized by one or more semiconductor lasers emit first laser light having a first wavelength; and a gain medium is excited by the first laser light, and oscillates second laser light having a second wavelength different from the first wavelength. Each ... 04/26/07 - 20070091948 - Multi-stage optical amplifier having photonic-crystal waveguides for generation of high-power pulsed radiation and associated method A method and apparatus use a photonic-crystal fiber having a very large core while maintaining a single transverse mode. In some fiber lasers and amplifiers having large cores problems exist related to energy being generated at multiple-modes (i.e., polygamy), and of mode hopping (i.e., promiscuity) due to limited control of ... 03/22/07 - 20070064753 - Optical device with integrated semi-conductor laser source and integrated optical isolator The field of the invention is that of optical devices comprising an integrated semi-conductor laser and an integrated optical isolator. These devices are used mainly in the field of digital telecommunications. More particularly, the invention applies to so-called absorption isolators whose complex index is non-reciprocal and depends on the direction ... 03/08/07 - 20070053396 - Semiconductor lasers utilizing algaasp A means of controlling the stress in a laser diode structure through the use of AlGaAsP is provided. Depending upon the amount of phosphorous in the material, it can be used to either match the lattice constant of GaAs, thus forming a strainless structure, or mismatch the lattice constant of ... 10/19/06 - 20060233209 - Solid body Solid body for the production of solid-state lasers, the solid body having, at least in an optically used area, monoclinic elementary cells based on the same crystallographic system of coordinates, and having in the optically used area at least two domains with different chemical compositions, the optically used area having ... 10/12/06 - 20060227830 - High pressure field emitter, photoionization, plasma initiation and field devices At least one exemplary embodiment is directed to a propulsion device that ionizes a portion of a medium and E×B drifts the ionized portion providing thrust where the ionized portion is created using high pressure field emitters comprising: a substrate layer; a gate layer; a field emitter tip; and a ... 10/12/06 - 20060227829 - Glaze soldered laser components and method of manufacturing A glaze soldered solid-state laser active medium. The novel laser active medium includes a first section of a first material, a second section of a second material, and a layer of ceramic glaze joining the two sections. The first and second materials may be identical, similar, or dissimilar, and may ... 09/14/06 - 20060203864 - Method and apparatus providing an output coupler for an optical beam An optical output coupler having a reflector integrated in an evanescent coupler. In one aspect of the present invention, an apparatus according to an embodiment of the present invention includes first and second optical paths. An optical beam is to be directed through the first optical path. The apparatus also ... 09/07/06 - 20060198410 - Laser exposure apparatus for exposing a screen held in a frame The subject matter of the invention is a laser exposure apparatus for exposing a screen (24) held in a frame (28), more specifically for Computer-to-Screen exposure. A low-cost method and a low-cost laser exposure apparatus of the type mentioned herein above by means of which the screen is readily held ... 08/03/06 - 20060171433 - Solid-state laser with compensation for thermooptical effects To compensate for undesirable thermooptical effects in optical pumping of solid-state laser rods, regions of the lateral surface are heated in such a way that reverse thermal gradients are created at these locations. This is achieved by providing said regions with a radiation-absorbing layer which is heated by pump radiation ... 07/20/06 - 20060159144 - Laser element and method for manufacturing the same [Problem] It is an object of the present invention to provide a method that can provide regions having different thicknesses of a laminated body containing an organic compound with a light-emitting property in the same element and also can apply an electric field uniformly in all the regions of the ... 07/13/06 - 20060153261 - Optically-pumped -620 nm europium doped solid state laser An optically-pumped ˜620 nm europium doped solid state laser is disclosed, with improved efficiency and practicality. The inventive laser device include laser active media comprising an europium doped dielectric solid state gain element, placed within a laser cavity, and pumped with either green (˜530 nm) or blue (˜470 nm) pump ... 07/13/06 - 20060153260 - Erbium doped fibers A method of producing green light signals couples pump signals from at least one pump source into at least one erbium doped fiber (EDF) to cause ground state absorption (GSA) and excited state absorption (ESA) in erbium ions of the EDF, which produces green light signals. The majority of the ... 07/06/06 - 20060146901 - 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 sensitizer ions ale eliminated to the thereby increase ... 06/22/06 - 20060133438 - Laser oscillator A laser oscillator is disclosed by means of current excitation by using a light-emitting element containing an organic matter. The present invention is a semiconductor device oscillating laser by current excitation comprising a light-emitting element having a laminated body which is formed by stacking sequentially a first layer made from ... 06/22/06 - 20060133437 - Organic injection laser An unipolar organic injection laser in which electrically-stimulated intraband transitions result in lasing. An active region includes at least one organic injector layer and at least one organic emitter layer. Each organic emitter layer has a first energy level and a second energy level on a same side of an ... 06/15/06 - 20060126685 - Slab laser amplifier with parasitic oscillation suppression A slab laser amplifier with parasitic oscillation suppression has a plurality of angled pump faces related to one another in order to decrease likelihood of parasitic oscillations, with internal beam incidence angles at total internal reflection that alleviate need for reflective coatings. No polished surfaces of gain material comprising the ... 05/25/06 - 20060109880 - Wafer laser crystal The present invention concerns a laser with a laser crystal in wafer form. In order to provide a laser apparatus with laser materials in wafer form which are improved over the state of the art, and a process for the production of improved laser materials in wafer form for such ... 04/20/06 - 20060083277 - Optically pumped frequency standard with reduces ac stark shift An apparatus for generating a stabilized frequency signal is disclosed. The apparatus includes a quantum absorber having first, second, and third energy states. The quantum absorber is irradiated by a first radiation source that generates electromagnetic radiation having a frequency, νL, that induces transitions between the first and third energy ... 04/13/06 - 20060078019 - Solid state laser insensitive to temperature changes A temperature insensitive diode-pumped solid state laser is disclosed in this invention. The components of the laser are optimized with temperature insensitive design, making the laser capable of operating in a wide temperature range without using any cooling/heating system to maintain the temperature of its components. ... 02/23/06 - 20060039426 - Novel ytterbium-phosphate glass A new ytterbium-phosphate glass and a method for producing the same are disclosed. The glass finds special use in forming laser glass. Previously the level of ytterbium that could be incorporated into a phosphate glass without leading to formation of crystals or devitrification was limited. It has been found that ... 02/23/06 - 20060039425 - Solid-state suspension laser A solid-state suspension laser. The novel laser includes a gain medium comprised of a plurality of solid-state gain particles suspended in a fluid. The laser also includes a pump source for pumping the gain particles and a resonator for amplifying and outputting laser light generated by the gain medium. In ... 12/15/05 - 20050276295 - Display device using vertical cavity laser arrays A display apparatus for producing colored pixelated light includes a backlight unit for producing pump-beam light and a vertical cavity laser array device including a structure for modulating the properties of the device at spaced locations so as to provide an array of spaced laser pixels which have higher net ... 12/01/05 - 20050265411 - Short wavelength diode-pumped solid-state laser A diode-pumped solid-state laser including a short wavelength (e.g., blue, violet, or UV) semiconductor laser that pumps an absorption transition in a rare-earth-doped material. Responsive to this pumping, the rare-earth active ion directly emits laser radiation. A number of different wavelength outputs, including short wavelengths, are achievable dependent upon the ... 11/24/05 - 20050259704 - Laser oscillation device A laser oscillation device, comprising an optical crystal, wherein an end surface of the optical crystal where a laser beam enters is cooled down by a gas. ... 11/17/05 - 20050254536 - Gain media edge treatment to suppress amplified spontaneous emission in a high power laser A novel method and apparatus for suppressing ASE and parasitic oscillation modes in a high average power laser is introduced. By roughening one or more peripheral edges of a solid-state crystal or ceramic laser gain media and by bonding such edges using a substantially high index bonding elastomer or epoxy ... 10/20/05 - 20050232320 - Method of manufacturing optical crystal element of laser A method of manufacturing an optical crystal element of a laser device includes measuring an initial thickness of a crystal substrate formed of YAG or YVO4; introducing a mixture of a fluorine gas and an Ar gas having a ratio of the fluorine gas to the Ar gas in a ... 09/08/05 - 20050195875 - Semiconductor laser element having tensile-strained quantum-well active layer In a semiconductor laser element, a lower cladding layer of AlGaInP of the first conductive type, a lower optical waveguide layer of AlGaInP, a quantum-well active layer of InGaP, an upper optical waveguide layer of AlGaInP, and an upper cladding layer of AlGaInP of the second conductive type are formed ... 09/08/05 - 20050195874 - Organic polariton laser The present invention relates to organic lasers. More specifically, the present invention is directed to an organic laser that provides a self-stimulated source of coherent radiation originating from organic microcavity polaritons. The organic polariton laser of the present invention comprises a substrate, a resonant microcavity comprising an organic polariton emission ... 09/08/05 - 20050195873 - Organic polariton laser The present invention relates to organic lasers. More specifically, the present invention is directed to an organic laser that provides a self-stimulated source of coherent radiation originating from organic microcavity polaritons. The organic polariton laser of the present invention comprises a substrate, a resonant microcavity comprising an organic polariton emission ... 08/04/05 - 20050169331 - Silica sol gel micro-laser on a substrate and method of fabrication Silica sol gel micro-lasers and methods of fabricating micro-lasers on a chip or a wafer. A silica sol gel micro-laser includes a silica sol gel optical micro-cavity, a substrate, and a support member or pillar that extends between the micro-cavity and the substrate. An outer surface or periphery of the ... 07/21/05 - 20050157765 - Low temperature grown layers with migration enhanced epitaxy adjacent to an ingaasn(sb) based active region A laser system having migration enhanced epitaxy grown substantially flat layers proximate to quantum wells of an active region. The flat layers may be grown at low temperature. This growth may result in flatter interfaces in the nitrogen containing quantum wells within the active region as well as lower trap ... 07/21/05 - 20050157764 - Laser element with laser-active medium By forming a laser element by embedding a laser-active medium in components of a heat-conducting crystalline material, an improved cooling effect can be achieved. As far as possible loss-free passage of the beam is achieved by a suitable orientation of interfaces and/or the use of antireflection coats or coatings. ... 06/23/05 - 20050135446 - Electrically driven organic optical resonator An electrically driven thin-film organic optical resonator. The thin-film organic optical resonator comprises a substrate, a back mirror provided on the substrate, at least one active region deposited on the back mirror, an external mirror, and electrical excitation means. At least one active region includes organic gain material. The external ... ### FreshPatents.com Support |