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Class 372/41 - Insulating crystal


Subclass of Class 372 - Coherent light generators
Definition: Subject matter where the solid active media is an electrically
No. of patents: 321
Last issue date: 08/16/2011


1                  
NumberTitleIssue Date
8000363Solid state laser device with reduced temperature dependence
The present invention relates to a solid state laser device with a solid state gain medium between two resonator end mirrors (3, 5) and a GaN-based pump laser (1) arranged to optically pump the solid state gain medium. The solid state gain medium is a ...
08/16/2011
7995631Solid-state laser with spatially-tailored active ion concentration using valence conversion with surface masking and method
A material having a surface and a dopant in the material distributed whereby the material has a spatially variant optical flux density profile. In accordance with the invention, tailored non-uniform gain profiles within a Yb:YAG laser component (rod, slab, disc, etc...
08/09/2011
7778296Optical microcavity emitter arrangements and methods therefor
Optical microcavity arrangements and approaches facilitate a variety of applications. According to an example embodiment of the present invention, an optical microcavity arrangement includes a microcrystal structure having a plurality of optical cavities therein to ...
08/17/2010
7643526Spontaneous/stimulated light emitting μ-cavity device
A light emitting device with a μ-cavity including a first spacer of single crystal dielectric material and an active area including single crystal erbium dielectric material positioned on the first spacer. The erbium dielectric material and the single crystal diele...
01/05/2010
7558304Single crystal laser material and system containing the same material
The invention relates to laser materials and specifically to single crystal active media for solid state lasers operating in the middle-infrared (Mid-IR) 4-5 μm range of optical spectrum, wherein a cross section of stimulated emission and laser wavelength is shifte...
07/07/2009
7440480Tetravalent 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
7433376Zig-zag laser with improved liquid cooling
A zig-zag laser has the ability to generate a high power beam while effectively removing heat without degrading the beam quality. The laser has a series of gaps interposed between the thin slabs, the gain medium, and between the thin slabs and the quartz windows to ...
10/07/2008
7430231Vertical 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
7362789Laser-diode-excited laser apparatus, fiber laser apparatus, and fiber laser amplifier in which laser medium doped with one of Ho, Sm, Eu, Dy, Er, and Tb is excited with GaN-based compound laser diode
A solid-state laser crystal constituting a laser-diode-excited solid-state laser apparatus or an optical fiber constituting a fiber laser apparatus or fiber laser amplifier is doped with one of Ho3+, Sm3+, Eu3+, Dy3+, Er
04/22/2008
7359415Cr-doped mixed alloy laser materials and lasers and methods using the materials
A laser medium includes a single crystal of Cr4+:Mg2-xMxSi1-yAyO4, where, where M is a bivalent ion having an ionic radius larger than Mg2+, and A is a tetravalent ion having an ionic radiu...
04/15/2008
7356065Laser-diode-excited laser apparatus, fiber laser apparatus, and fiber laser amplifier in which laser medium doped with one of Ho, Sm, Eu, Dy, Er, and Tb is excited with GaN-based compound laser diode
A solid-state laser crystal constituting a laser-diode-excited solid-state laser apparatus or an optical fiber constituting a fiber laser apparatus or fiber laser amplifier is doped with one of Ho3+, Sm3+, Eu3+, Dy3+, Er
04/08/2008
7286587Holmium 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
7266279Optically pumped stepped multi-well laser
An apparatus and methods for an optically pumped laser that has a cascade of light-emitting interband transitions are disclosed. The apparatus disclosed contains multistep interband cascade regions able to generate a plurality of photons for a pump photon absorbed f...
09/04/2007
7260124Nonlinear optical crystal optimized for ytterbium laser host wavelengths
A material for harmonic generation has been made by substitutional changes to the crystal LaCa4(BO3)3 also known as LaCOB in the form Re1xRe2yRe3zCa4(B03)3O where Re1 ...
08/21/2007
7260133Diode-pumped laser
A diode-pumped laser with a direct edge coupling of a pump beam is provided. The laser includes a microchip laser cavity optically pumped by a laser diode emitting an astigmatic pump beam having a substantially elliptical beam cross-section at an output laser diode ...
08/21/2007
7242698Wavelength tunable laser with dispersive element
A laser being tunable in wavelength includes a first reflecting unit and a second reflecting unit, both reflecting units being arranged to at least partially reflect an incident beam of electromagnetic radiation towards each other, an optical path of said beam of el...
07/10/2007
7230967Waveguide laser
A laser waveguide, where the laser waveguide can be formed by electrodes and at least one sidewall in a manner allowing a more compact structure than previously provided. Protrusions in the electrodes allow easier laser starts, and sectional sidewall(s) allow easier...
06/12/2007
7227157Stimulable cerium activated lutetium borate phosphor
A cerium activated lutetium borate phosphor of the following formula (I): (Lux,Lny)BO3:aCe,bA   (I) in which Ln is at least one rare earth element selected from the group consisting of Y, La and Gd...
06/05/2007
7227680Optical wavelength conversion method, optical wavelength conversion system, program and medium, and laser oscillation system
In an optical wavelength converting method in which light from a laser oscillator that oscillates coherent light of an inherent wavelength λ is employed as incident light, and is made to input to a nonlinear optical crystal, and light having a wavelength of ½
06/05/2007
7224532Optical uses diamondoid-containing materials
Novel optical devices based on diamondoid-containing materials are disclosed. Materials that may be fabricated from diamondoids included diamondoid nucleated CVD films, diamondoid-containing CVD films, molecular crystals, and polymerized materials. Devices that may ...
05/29/2007
7224707Suppression of mode-beating noise in a Q-switched pulsed laser using novel Q-switch device and applications
A novel Q-switch device enables significant quality and value improvement for a Q-switched laser system by achieving a significant reduction of mode-beating noise during the pulsed output. The origin of mode-beating noise in a Q-switched laser is a result of high ga...
05/29/2007
7218653Wavelength conversion method and wavelength conversion element
An ultraviolet laser is provided that increases the conversion efficiency of laser beams when harmonics having wavelengths of less than 355 nm are generated by converting laser beams with a wavelength conversion element made of a single crystal of lithium tetraborat...
05/15/2007
7203214Off-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
7198738Cesium-lithium-borate crystal and its application to frequency conversion of laser light
The present invention provides a cesium-lithium-borate crystal, which can be used as a high-performance wavelength converting crystal, having a chemical composition expressed as CsLiB6O10, and substituted cesium-lithium-borate crystals expressed by the following for...
04/03/2007
7197060Waveguide laser
A laser waveguide, where the laser waveguide can be formed by electrodes and at least one sidewall in a manner allowing a more compact structure than previously provided. Protrusions in the electrodes allow easier laser starts, and sectional sidewall(s) allow easier...
03/27/2007
7190037Integrated transistor devices
A self-aligned enhancement mode metal-oxide-compound semiconductor field effect transistor (10) includes a lower oxide layer that is a mixture of Ga2O, Ga2O3, and other gallium oxide compounds (30), and a second insulat...
03/13/2007
7187045Junction field effect metal oxide compound semiconductor integrated transistor devices
A self-aligned enhancement mode metal-oxide-compound semiconductor field effect transistor includes a gate insulating structure comprised of a first conducting oxide layer comprised of indium oxide compounds positioned immediately on top of the compound semiconducto...
03/06/2007
7179405Nonlinear optical crystal optimized for Ytterbium laser host wavelengths
A material for harmonic generation has been made by substitutional changes to the crystal LaCa4 (BO3)3 also known as LaCOB in the form Re1xRe2yRe3zCa4(BO3)3O where Re1...
02/20/2007
7166548Apatite glass ceramic based on siliceous oxyapatites
Apatite glass ceramic which contains at least one glass phase and at least one apatite phase and is characterized in that at least one of the apatite phases is a phosphate- and fluorine-free siliceous oxyapatite phase. ...
01/23/2007
7161966Side-pumped fiber laser
An optical fiber includes a radial axis, a longitudinal axis, a first window surface adapted for receiving pump radiation and transmitting the pump radiation into the optical fiber, a second surface adapted for totally internally reflecting pump radiation received w...
01/09/2007
7161967Method for checking the regulation state of a frequency-stabilized laser system and frequency-stabilized laser system
The invention relates to a method for checking the regulation state of a frequency-stabilised laser system comprising a laser (2). At least one first sidebrand frequency VHF is modulated to the laser beam (1) of said laser, the laser beam being guided ...
01/09/2007
7130321Intracavity frequency-tripled CW laser with traveling-wave ring-resonator
A traveling-wave ring laser resonator includes one or more gain-elements for generating fundamental radiation and three optically nonlinear crystals. A portion of the fundamental radiation is converted to second-harmonic radiation in a first of the crystals. Remaini...
10/31/2006
7116687High repetition rate passively Q-switched laser for blue laser based on interactions in fiber
A laser apparatus is disclosed. The apparatus includes a Neodymium-doped lasing material having first and second surfaces and a passive Q-switch optically coupled to the second surface. The first-surface is substantially transparent to a pump radiation and substanti...
10/03/2006
7112921Light emitting device having selenium-based fluorescent phosphor
Provided herein are novel phosphors useful in the manufacture of white light emitting diodes. The phosphors provided by the invention are described by the formulae: MSxSey: B in which x, and y are each independently any valu...
09/26/2006
7109648Light emitting device having thio-selenide fluorescent phosphor
Provided herein are novel phosphors useful in the manufacture of white light emitting diodes. The phosphors provided by the invention are described by the formulae: MA2(SxSey)4:B and/or M...
09/19/2006
7103078Laser containing a distributed gain medium
A laser device which may be used as an oscillator or amplifier comprising a chamber having a volume formed therein and a gain medium within the volume. The gain medium comprises solid-state elements containing active laser ion distributed within the volume. A coolin...
09/05/2006
7088749Green welding laser
A harmonic system for use with metals and alloys such as titanium, steel, copper, gold, aluminum, etc. is disclosed. The harmonic laser system includes an oscillator cavity having a first end mirror and a harmonic separator mirror, an active medium positioned in the...
08/08/2006
7087447Method for fabricating zig-zag slabs for solid state lasers
A method for batch manufacturing of slabs for zig-zag lasers including steps of bonding two non-active media to either side of an active medium to form a sandwich, dicing the sandwich to provide slices, rendering two surfaces of each slice into total-internal-reflec...
08/08/2006
7075964Diode-pumped solid-state laser oscillator
A diode-pumped solid-state laser oscillator optically pumps a laser medium. The oscillator has at least one pumping light source that emits light in a predetermined wavelength band, and a laser medium that absorbs light in the wavelength band. In the wavelength band...
07/11/2006
7075965Wavelength conversion laser apparatus
The present invention is a wavelength conversion laser apparatus for converting wavelength by utilizing a nonlinear optical crystal and capable of safely using it over a long time. For this end, the fundamental wave laser light emitted from the pumping chamber unit ...
07/11/2006
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