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8040931 Dual layer color-center patterned light source  
A method of fabricating a color laser, comprising growing a first thin layer of ionic crystal on a substrate. The crystal can comprise many types of ionic crystals, such as sodium chloride or...
7995631 Solid-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...
7961762 White light-emitting lamp and illuminating device using the same  
A white light-emitting lamp (1) includes a light-emitting portion (9) which is excited by light emitted from a semiconductor light-emitting element (2) to emit white light. The light-emitting...
7829902 Quantum photonic imagers and methods of fabrication thereof  
Emissive quantum photonic imagers comprised of a spatial array of digitally addressable multicolor pixels. Each pixel is a vertical stack of multiple semiconductor laser diodes, each of which can...
7775668 Color-mixing laser module and projectors using the same  
A color-mixing laser module is disclosed, which is comprised of a laser unit capable of emitting red, blue and green laser beams; a beam combiner, for receiving and converging the laser beams...
7260127 Dual layer color-center patterned light source  
A thin layer of ionic crystal is grown on a substrate. The crystal could be any type of ionic crystal, such as sodium chloride or potassium chloride. The crystal is a pure form of the chosen...
7199390 Window interface layer of a light-emitting diode  
This invention is about a window interface layer in a light-emitting diode which comprises an n-type GaAs substrate with an n-type ohmic electrode at the bottom side thereof; an n-type AlGaInP...
6983003 III-V nitride semiconductor laser device  
A III-V nitride semiconductor laser device demonstrates an excellent emission characteristic without an increase in production cost. The refractive index of a p-side optical guiding layer is larger...
6967984 External cavity laser  
External cavity laser with reflector in optical wave guide, particularly HDBR laser, with an active element comprising a semiconductor optical amplifying cavity having a low-reflectivity facet (3),...
6870868 Organic laser having improved linearity  
An organic vertical cavity laser device includes a substrate; a bottom dielectric stack reflective to light over a predetermined range of wavelengths and being disposed over the substrate, and an...
6853664 Semiconductor laser element, semiconductor etchant, and method of fabricating the semiconductor laser element  
The semiconductor laser element comprises, from bottom to top, the p-AlxGa1−xAs upper clad layer, p-AlyGa1−yAs resistance control layer, and p-GaAs cap layer (where x>y>0.2). A portion of only the...
6829273 Nitride semiconductor layer structure and a nitride semiconductor laser incorporating a portion of same  
The nitride semiconductor layer structure comprises a buffer layer and a composite layer on the buffer layer. The buffer layer is a layer of a low-temperature-deposited nitride semiconductor...
6687275 Resonating cavity system for broadly tunable multi-wavelength semiconductor lasers  
A resonating cavity system of a tunable multi-wavelength semiconductor laser. The system has a laser, a collimating lens, a grating, a slit plate, and adjustable mirrors. The laser has two ends....
6632757 Transparent forsterite glass-ceramics  
A glass-ceramic which is substantially and desirably totally transparent, and which contains a predominant crystal phase of forsterite. The glass-ceramic is formed from precursor glasses having the...
6606332 Method and apparatus of color mixing in a laser diode system  
A color mixing system is proposed for use in an optical-fiber laser-diode assembly comprising at least two semiconductor laser diodes, optical fiber light input and output couples, a system of...
6285700 Semiconductor laser  
A semiconductor laser capable of producing a high optical output has a coating film applied to an exit end. The coating film has a refractive index (n1) which is large compared with the refractive...
6263002 Tunable fiber Fabry-Perot surface-emitting lasers  
This invention provides compact, fixed-wavelength and tunable fiber-optic lasers comprising a gain medium, for example a semiconductor, half-cavity VCSEL, or an organic light emitting polymer,...
5982797 Room temperature stable color center laser, LiF:F2+ ** material, method of lasing  
The present invention is directed to a tunable, solid state laser utilizing room temperature, stable, color centers of LiF:F2+ ** material. Also disclosed is a method of lasing. An object of the...
5889804 Artificial color-center light source  
In a color-center light source, a color center is formed artificially. A predetermined single atom is removed from the surface of a defect-free ionic crystal so as to form a lattice defect. Optical...
RE35946 Optical fibre amplifier with fluorescent additive and method of amplifying signals using same  
An optical fibre for use in fibre lasers has the lasing additive eg Er3+, concentrated in center of the core. Preferably the core has an inner region which contains the additive and an outer region...
5583957 Optical switch  
An optical switch includes a dual-core optical fibre coupler having waveguides which are erbium doped, silica-based fibre amplifiers. The waveguides are pumped by pump lasers which are used to...
5581499 Micro information storage system  
A device for optically storing and retrieving information incorporating a cadmium fluoride crystal. Using focused ionizing radiation, patterns can be formed in the crystal by the creation of color...
5504767 Doped diamond laser  
A solid state laser is provided having as the laser medium diamond and an optically active dopant element which is found to lase in the solid matrix. The dopant is preferably titanium, vanadium,...
5487079 Continuously tunable UV Ce:LiSAF solid state laser  
An ultraviolet solid state laser includes: (a) a laser cavity defined by a et of opposing mirrors, (b) a laser medium disposed in this laser cavity, where this medium includes a LiSrAIF6 (LiSAF)...
5471493 Sc2+ based active crystalline luminescent media for laser systems tunable in UV-visible spectral range  
Disclosed is the use of Sc2+ based active crystalline luminescent media for laser systems, tunable in the UV-visible spectral range. The crystalline media are Sc-doped alkali-earth-halide crystals...
5461635 Solid state laser with superbroadband or control generation spectrum  
The subject invention relates to a new regime of lasing--superbroadband or pre-assigned spectral composition lasing. A new cavity construction and application of room temperature operable LiF color...
5271025 Mode-locked upconversion laser source  
A laser source which operated under the principals of cooperative unconversion produces controllable optical pulses at wavelengths which are shorter than the wavelength of the laser energy which...
5267254 Color center laser with transverse auxiliary illumination  
A color center laser is provided with a crystal disposed within a longitudinally pumped cavity. Optics are provided to transversely excite the crystal. Both a circular lens and a cylindrical lens...
4990322 NaCl:OH color center laser  
A powerful and stable color center laser is provided by additively colored NaCl:OH- crystals. The OH- impurity is the key dopant for creating color center lasing in NaCl, providing an output...
4964133 Lasers in alkali halides using N and R color-centers  
The laser material of the invention comprises an alkali-halide crystal, with a rocksalt crystallographic structure, containing point defects selected from the group consisting of F3 or R, F4 and N2...
4950625 Diamond laser crystal and method manufacturing the same  
A method of manufacturing a diamond laser crystal having an excellent laser efficiency is performed by first, preparing a synthetic type Ib diamond containing at least 60 volume percent of a (111)...
4949347 Diamond laser, method for producing the same, and method for activating such a laser  
A diamond laser formed of a synthetic diamond provides a high output power and a variable wavelength in the near infrared region. The maximum value of the optical density of H2 centers in the...
4881234 Method for forming copious (F2+)A centers in certain stable, broadly tunable laser-active materials  
(F2+)A color centers can be produced in additively-colored KI:Li or RbI:Li crystals provided that the material is colored in a nitrogen-free atmosphere. Copious (F2+)A centers are produced in...
4880613 Light emitting element comprising diamond and method for producing the same  
A light emitting element comprising diamond which contains N-V color centers in a maximum optical density of of 0.01 to 3.5 in a direction of excitation light, Ib type nitrogen atoms in a maximum...
4847843 Color center laser fibre and applications thereof  
Optical fibres comprised of a halide glass incorporating color centers, for example fluoride fibres, can behave as a laser or an amplifier when maintained at a low temperature, typically 77° K., ...
4833333 Solid state laser Q-switch having radial color center distribution  
A passive laser Q-switch is fabricated from a crystal which can form saturable color centers, such as lithium fluoride. The arbitrarily long crystal is irradiated with electrons from the side, or...
4811289 Optical recording device enploying doped crystal for optically storing information  
An optical recording device includes a crystal selected from the group of alkali metal halides or alkali-earth halides and is doped with an alkali metal dopant and negative hydride ions to form a...
4740988 Laser device having mirror heating  
A laser device is disclosed having mirror heating to enhance performance of the device by minimizing induced light absorption to thereby improve mirror quality. The mirrors of a laser device are...
4733369 Method for providing separately adjustable voltage dependent optical properties  
The electro-optical method described herein provides adjustable voltage dependent optical properties of a solid whereby the characteristics, i.e., the optical response to applied voltage, are...
4672619 Color centers for tunable lasers in the near infrared region  
Stable color centers capable of laser emission in the near infrared region of the optical spectrum are provided in alkali halide host crystals containing monovalent heavy metal cation impurities...
4644550 Liquid cooled neodymium-phosphate glass-impulse laser particularly for medical applications  
A fluid cooled neodymium phosphate glass impulse laser comprising a passive release circuit. The laser may be designed with reduced size so as to be portable and is mainly used in medicine...
4638485 Solid state vibrational lasers using F-center/molecular-defect pairs in alkali halides  
Vibrational emission from molecular defects in ionic crystals can be realized by dilute diatomic molecular defects such as, e.g., CN- molecules in alkali halide crystals. After association of...
4638484 Solid state laser employing diamond having color centers as a laser active material  
A diamond (10) containing H3 and N3 color centers is employed as a laser active material in a color center laser. When excited by a suitable optical pumping source (22), the H3 color centers...
4519082 Color center laser, material, and method of lasing  
A laser material for a solid state tunable laser comprises a potassium or rubidium halide crystal with lithium and/or sodium cation impuritites in a crystalographic structure with point defects...
4347485 Excimer-pumped blue-green laser  
A method of achieving inversion in solid-state rare-earth materials for blue-green laser operation. A XeF excimer laser is used to pump a matching transition in divalent ytterbium in a host...
4301426 Solid state laser and material  
Broadly tunable, c.w. laser action in the ir(infrared) spectral region is obtained from (F2+)A color centers in an alkali halide crystal having FA, FB, FA ', FB ' (F2)A and (F2+)A color centers in...
4255719 Maintenance of optimal orientation in F2+ color center lasers  
Intense optical pumping of the 1Sσg ➝2Pσu transition of the F2+ color center as required for laser action produces a slow orientational bleaching of the F2+ color centers that is eventually deb...
4208636 Laser apparatus  
An infrared laser is described which is optically pumped by a pump laser operating at a visible wavelength. The polarization of the pump, is opposite from the lasing polarization, and is coupled...
4183795 Creation of F2+ color centers  
Production of F2+ color centers in alkali halide crystals with densities high enough for efficient use in lasers is achieved by a two-step, highly selective photoionization mechanism. This...
3991386 Active optical devices with spatially modulated populations of F-centers  
The disclosed distributed feedback laser employs an alkali halide crystal having a spatially modulated pattern of a stable color center and a complementary spatially modulated pattern of U-centers....
Matches 1 - 50 out of 55 1 2 >