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| Number | Title | Issue Date |
| 7550735 | GaTe semiconductor for radiation detection GaTe semiconductor is used as a room-temperature radiation detector. GaTe has useful properties for radiation detectors: ideal bandgap, favorable mobilities, low melting point (no evaporation), non-hygroscopic nature, and availability of high-purity starting materia... | 06/23/2009 |
| 7386017 | Synthetic guide star generation A system for assisting in observing a celestial object and providing synthetic guide star generation. A lasing system provides radiation at a frequency at or near 938 nm and radiation at a frequency at or near 1583 nm. The lasing system includes a fiber laser operat... | 06/10/2008 |
| 7286575 | Diode pumped alkali vapor fiber laser A method and apparatus is provided for producing near-diffraction-limited laser light, or amplifying near-diffraction-limited light, in diode pumped alkali vapor photonic-band-gap fiber lasers or amplifiers. Laser light is both substantially generated and propagated... | 10/23/2007 |
| 7082148 | Diode pumped alkali vapor fiber laser A method and apparatus is provided for producing near-diffraction-limited laser light, or amplifying near-diffraction-limited light, in diode pumped alkali vapor photonic-band-gap fiber lasers or amplifiers. Laser light is both substantially generated and propagated... | 07/25/2006 |
| 7038844 | High power 938 nanometer fiber laser and amplifier An optical fiber amplifier includes a length of silica optical fiber having a core doped with neodymium, a first cladding and a second cladding each with succeeding lower refractive indices, where the first cladding diameter is less than 10 times the diameter of the... | 05/02/2006 |
| 6937636 | Tapered laser rods as a means of minimizing the path length of trapped barrel mode rays By tapering the diameter of a flanged barrel laser rod over its length, the maximum trapped path length of a barrel mode can be dramatically reduced, thereby reducing the ability of the trapped spontaneous emission to negatively impact laser performance through ampl... | 08/30/2005 |
| 6763050 | Method for optical pumping of thin laser media at high average power A thin, planar laser material is bonded to a light guide of an index-matched material forming a composite disk. Diode array or other pump light is introduced into the composite disk through the edges of the disk. Pump light trapped within the composite disk depletes... | 07/13/2004 |
| 6704331 | Synthetic guide star generation A system for assisting in observing a celestial object and providing synthetic guide star generation. A lasing system provides radiation at a frequency at or near 938 nm and radiation at a frequency at or near 1583 nm. The lasing system includes a fiber l... | 03/09/2004 |
| 6640040 | Compact cladding-pumped planar waveguide amplifier and fabrication method A low-cost, high performance cladding-pumped planar waveguide amplifier and fabrication method, for deployment in metro and access networks. The waveguide amplifier has a compact monolithic slab architecture preferably formed by first sandwich bonding an ... | 10/28/2003 |
| 6570702 | Antiguided fiber ribbon laser The invention is a ribbon of an optical material with a plurality of cores that run along its length. The plurality of cores includes lasing impurity doped cores in an alternating spaced arrangement with index-modifying impurity doped cores. The ribbon co... | 05/27/2003 |
| 6347109 | High average power scaleable thin-disk laser Using a thin disk laser gain element with an undoped cap layer enables the scaling of lasers to extremely high average output power values. Ordinarily, the power scaling of such thin disk lasers is limited by the deleterious effects of amplified spontaneo... | 02/12/2002 |
| 6304584 | Blue diode-pumped solid-state-laser based on ytterbium doped laser crystals operating on the resonance zero-phonon transition The invention provides an efficient, compact means of generating blue laser light at a wavelength near ~493+/-3 nm, based on the use of a laser diode-pumped Yb-doped laser crystal emitting on its zero phonon line (ZPL) resonance transition at a wavelength... | 10/16/2001 |
| 6266353 | Monolithic laser diode array with one metalized sidewall A monolithic, electrically-insulating substrate that contains a series of notched grooves is fabricated. The substrate is then metalized so that only the top surface and one wall adjacent to the notch are metalized. Within the grooves is located a laser b... | 07/24/2001 |
| 6222872 | Delivering pump light to a laser gain element while maintaining access to the laser beam A lens duct is used for pump delivery and the laser beam is accessed through an additional component called the intermediate beam extractor which can be implemented as part of the gain element, part of the lens duct or a separate component entirely.... | 04/24/2001 |
| 6212215 | Hybrid solid state laser system using a neodymium-based master oscillator and an ytterbium-based power amplifier In a master oscillator-power amplifier (MOPA) hybrid laser system, the master oscillator (MO) utilizes a Nd3+ -doped gain medium and the power amplifier (PA) utilizes a diode-pumped Yb3+ -doped material. The use of two different lase... | 04/03/2001 |
| 6160934 | Hollow lensing duct A hollow lensing duct to condense (intensify) light using a combination of focusing using a spherical or cylindrical lens followed by reflective waveguiding. The hollow duct tapers down from a wide input side to a narrow output side, with the input side c... | 12/12/2000 |
| 6047013 | Low-phonon-frequency chalcogenide crystalline hosts for rare earth lasers operating beyond three microns The invention comprises a RE-doped MA2 X4 crystalline gain medium, where M includes a divalent ion such as Mg, Ca, Sr, Ba, Pb, Eu, or Yb; A is selected from trivalent ions including Al, Ga, and In; X is one of the chalcogenide ions S... | 04/04/2000 |
| 5694500 | Optical amplifier operating at 1.3 microns useful for telecommunications and based on dysprosium-doped metal chloride host materials Dysprosium-doped metal chloride materials offer laser properties advantageous for use as optical amplifiers in the 1.3 μm telecommunications fiber optic network. The upper laser level is characterized by a millisecond lifetime, the host material possesse... | 12/02/1997 |
| 5677921 | Ytterbium-doped borate fluoride laser crystals and lasers A new class of solid state laser crystals and lasers are formed from Yb-doped borate fluoride host crystals. The general formula for the host crystals is MM'(BO3)F, where M, M' are monovalent, divalent aria trivalent metal cations. A particular... | 10/14/1997 |
| 5663972 | Ultrafast pulsed laser utilizing broad bandwidth laser glass An ultrafast laser uses a Nd-doped phosphate laser glass characterized by a particularly broad emission bandwidth to generate the shortest possible output pulses. The laser glass is composed primarily of P2 O5, Al2 O3... | 09/02/1997 |
| 5541948 | Transition-metal doped sulfide, selenide, and telluride laser crystal and lasers A new class of solid state laser crystals and lasers are formed of transition metal doped sulfide, selenide, and telluride host crystals which have four fold coordinated substitutional sites. The host crystals include II-VI compounds. The host crystal is ... | 07/30/1996 |
| 5526369 | Phosphate glass useful in high energy lasers In a high energy laser system utilizing phosphate laser glass components to mplify the laser beam, the laser system requires a generated laser beam having an emission bandwidth of less than 26 nm and the laser glass components consist essentially of (on an... | 06/11/1996 |
| 5517516 | Optically pumped cerium-doped LiSrAlF6 and LiCaAlF6 Ce3+ -doped LiSrAlF6 crystals are pumped by ultraviolet light which is polarized along the c axis of the crystals to effectively energize the laser system. In one embodiment, the polarized fourth harmonic light output from a conventi... | 05/14/1996 |
| 5341389 | Ytterbium- and neodymium-doped vanadate laser hose crystals having the apatite crystal structure Yb3+ and Nd3+ doped Sr5 (VO4)3 F crystals serve as useful infrared laser media that exhibit low thresholds of oscillation and high slope efficiencies, and can be grown with high optical quality. The... | 08/23/1994 |
| 5280492 | Yb:FAP and related materials, laser gain medium comprising same, and laser systems using same An ytterbium doped laser material remarkably superior to all others, including Yb:YAG, comprises Ytterbium doped apatite (Yb:Ca5 (PO4)3 F) or Yb:FAP, or ytterbium doped crystals that are structurally related to FAP. The ne... | 01/18/1994 |
| 5105434 | AlGaAs diode pumped tunable chromium lasers An all-solid-state laser system is disclosed wherein the laser is pumped in the longwave wing of the pump absorption band. By utilizing a laser material that will accept unusually high dopant concentrations without deleterious effects on the crystal latti... | 04/14/1992 |
| 4811349 | Cr3+ -doped colquiriite solid state laser material Chromium doped colquiriite, LiCaAlF6 :Cr3+, is useful as a tunable laser crystal that has a high intrinsic slope efficiency, comparable to or exceeding that of alexandrite, the current leading performer of vibronic sideband Cr3+... | 03/07/1989 |