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| Number | Title | Issue Date |
| 8130442 | Optical amplifying medium, method of manufacturing the optical amplifying medium, and optical device comprising the optical amplifying medium An optical amplifying medium, a method of manufacturing the optical amplifying medium are provided, and an optical device comprising the optical amplifying medium. The optical amplifying medium includes a multi-layer structure in which a first material layer doped w... | 03/06/2012 |
| 8031397 | Three-level magnon laser at room temperatures A magnon laser comprising: a Magnon Gain Medium, wherein the Magnon Gain Medium supports generation of nonequilibrium magnons, and a means for pumping nonequilibrium electrons into the Magnon Gain Medium. Propagation of nonequilibrium electrons in Magnon Gain Medium... | 10/04/2011 |
| 8018648 | Nanoparticle doped hybrid photorefractives The present invention provides a photorefractive hybrid cell including a window and a gain media disposed adjacent the window. The gain media includes nanoparticles therein. The window includes a material that forms a space-charge field. The gain media includes a ma... | 09/13/2011 |
| 7986454 | Tunable terahertz generator using a magnon gain medium with an antenna An apparatus and method for tunable generation of terahertz waves at room temperatures are provided. The apparatus for tunable terahertz generation comprises: (A) a terahertz antenna further comprising a magnon gain medium; (B) a means for generating the nonequilibr... | 07/26/2011 |
| 7982946 | Modulation of terahertz radiation generated in magnon gain cavity An apparatus and method for generating modulated terahertz radiation are provided. The apparatus comprises: (A) a means for generating Terahertz radiation by pumping nonequilibrium electrons into Magnon Gain Medium (MGM); wherein the nonequilibrium electrons emit no... | 07/19/2011 |
| 7706056 | Modulation of terahertz radiation A method of modulation terahertz radiation comprising: (A) generating Terahertz radiation by pumping nonequilibrium electrons into a Magnon Gain Medium (MGM), wherein propagation of nonequilibrium electrons in the MGM causes generation of nonequilibrium magnons, and... | 04/27/2010 |
| 7508578 | Magnon laser A magnon laser comprising: a magnon gain medium (MGM) that supports generation of nonequilibrium magnons, and a means for generating nonequilibrium magnons in the MGM further comprising a means for pumping nonequilibrium electrons into the MGM. Propagation of nonequ... | 03/24/2009 |
| 7471449 | Method and apparatus for generating Terahertz radiation with magnon gain medium and magnon mirror An apparatus for generation of Terahertz radiation comprising: (A) a Magnon Gain Medium (MGM), wherein the MGM supports generation of nonequilibrium magnons; and (B) at least one magnon mirror (MM). The nonequilibrium magnons are generated in the MGM. Interaction be... | 12/30/2008 |
| 7440178 | Tunable generation of terahertz radiation A method of tunable generation of terahertz radiation comprising: (A) providing a magnon gain medium; wherein the magnon gain medium supports generation of nonequilibrium magnons; (B) generating terahertz radiation in the magnon gain medium; and (C) tuning frequency... | 10/21/2008 |
| 7433118 | Bridged polysesquioxane host matrices containing lanthanides chelated by organic guest ligands, and methods of making such matrices Bridged polysesquioxane compositions comprising: a bridged polysesquioxane host matrix comprising sesquioxane moieties and organic moieties, the sesquioxane moieties comprising a metallic element, the organic moieties interposed between sesquioxane moieties; and a g... | 10/07/2008 |
| 7430074 | Generation of Terahertz waves A method of THz photon generation comprising: providing a magnon gain medium; wherein the magnon gain medium supports generation of nonequilibrium magnons; and injecting nonequilibrium electrons into the magnon gain medium. Propagation of nonequilibrium electrons in... | 09/30/2008 |
| 7400807 | Apparatus and method for a waveguide with an index profile manifesting a central dip for better energy extraction A method and apparatus is described that use an index-of-refraction profile having a significant central dip in refractive index (or another tailored index profile) within the core of a gain fiber or a gain waveguide on a substrate. The benefits of this central dip ... | 07/15/2008 |
| 7367215 | Formation of metal nanowires for use as variable-range hydrogen sensors The present invention provides for variable-range hydrogen sensors and methods for making same. Such variable-range hydrogen sensors comprise a series of fabricated Pd—Ag (palladium-silver) nanowires—each wire of the series having a different Ag to Pd ratio—wi... | 05/06/2008 |
| 7352949 | Fiber used in wideband amplified spontaneous emission light source and the method of making the same The present invention relates to a fiber having a core of crystal fiber doped with chromium and a glass cladding. The fiber has a gain bandwidth of more than 300 nm including 1.3 mm to 1.6 mm in optical communication, and can be used as light source, optical amplifi... | 04/01/2008 |
| 7336415 | Optical amplification module, optical amplification apparatus, and optical communications system The present invention relates to a practical optical amplification module and the like realizing a wide-band gain spectrum with a small relative gain non-uniformity in L band. Pumping light from a pumping light source is supplied to a Bi type EDF by way of an optica... | 02/26/2008 |
| 7317192 | High energy polyenergetic ion selection systems, ion beam therapy systems, and ion beam treatment centers Devices and methods are provided for generating laser-accelerated high energy polyenergetic positive ion beams that are spatially separated and modulated based on energy level. The spatially separated and modulated high energy polyenergetic positive ion beams are us... | 01/08/2008 |
| 7295739 | Coherent DUV illumination for semiconductor wafer inspection An apparatus for inspecting a specimen, such as a semiconductor wafer, is provided. The apparatus comprises a laser energy source, such as a deep ultraviolet (DUV) energy source and an optical fiber arrangement. The optical fiber arrangement comprises a core surroun... | 11/13/2007 |
| 7268936 | Optical amplifier having polarization mode dispersion compensation function An object of the present invention is to provide at low cost, a highly functional and small size optical amplifier, which realizes a polarization mode dispersion (PMD) compensation function and an optical amplifying function, with a simple construction. To this end,... | 09/11/2007 |
| 7237429 | Continuous-range hydrogen sensors The present invention provides for novel hydrogen sensors and methods for making same. In some embodiments, such novel hydrogen sensors are continuous-range hydrogen sensors comprising Pd—Ag nanoparticles arrayed as nanowires or two-dimensional shapes on a resisti... | 07/03/2007 |
| 7220809 | Optical material containing fluorine-containing polymer having functional group There is provided an optical material obtained from an organic composition which is suitable for an optical material in optical communication and comprises a fluorine-containing polymer having functional group and a rare earth metal ion, in which the fluorine-contai... | 05/22/2007 |
| 7215836 | System for amplifying optical signals The invention is in the field of distributed Raman amplification for digital and analog transmission applications and other applications, e.g., instrumentation and imaging applications, including HFC-CATV applications. In particular, the invention uses a high power ... | 05/08/2007 |
| 7202998 | Optical amplifier Optical circuits for optical amplifier input and output stages are described. The input stage circuit (42) comprises a first optical waveguide (46) for carrying a signal beam to be amplified, a second optical waveguide (62) for carrying a pump b... | 04/10/2007 |
| 7190872 | Semiconductor optical amplifier and optical module using the same The present invention provides a polarization dependency-free, gain-saturated high function semiconductor optical amplifier and optical module at industrially low cost. The gist of the present invention is to structurally separate the optical signal propagating wave... | 03/13/2007 |
| 7190861 | Monolithic semiconductor light source with spectral controllability The invention is in the field of distributed Raman amplification for digital and analog transmission applications and other applications, e.g., instrumentation and imaging applications, including HFC-CATV applications. In particular, the invention uses a high power ... | 03/13/2007 |
| 7180657 | Devices using high precision in-fiber atomic frequency reference Techniques and devices based on holey fibers with internal holes that confine a gas medium for various applications. ... | 02/20/2007 |
| 7164822 | Variable optical gain control device A variable optical gain control device is capable of amplifying an optical signal while controlling its luminous intensity. The device is made up of optical waveguide paths which are formed on a flat face of a substrate and includes an input directional coupler for ... | 01/16/2007 |
| 7158711 | Structure of photonic crystal Disclose is a photonic crystal structure comprises atomic dielectric pillars having a refractive index distribution and a structure which are both mirror-symmetrical in a thicknesswise direction of the photonic crystal. The atomic pillars are arrayed in a two-dimens... | 01/02/2007 |
| 7155096 | Optical collimator for monomode fibers; monomode fiber with integrated collimator and method for making same An optical collimator for single mode fibers includes a fiber segment (S1) with mode expansion including an entry and an exit for a light beam. The entry of the fiber segment with mode expansion is on the side at which the core diameter is the smallest, and t... | 12/26/2006 |
| 7127145 | Semiconductor optical amplifier, and optical module using the same The present invention provides a polarization dependency-free, gain-saturated high function semiconductor optical amplifier and optical module at industrially low cost. The gist of the present invention is to structurally separate the optical signal propagating wave... | 10/24/2006 |
| 7120340 | Single polarization optical fiber laser and amplifier An optically active linear single polarization device includes a linearly birefringent and linearly dichroic optical waveguide (30) for propagating light and having single polarization wavelength range (48). A plurality of active dopants are disposed i... | 10/10/2006 |
| 7116687 | High 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 |
| 7106500 | Raman amplifier system A Raman amplifier system, including an optical wave guide having a crystalline material for guiding an optical signal having a first wavelength, the crystalline material having a Raman wavelength shift, and a pump configured to pump light into the optical wave guide... | 09/12/2006 |
| 7099530 | Optical transmitter module and wavelength division multiplexing light source using the same An optical transmitter module for creating an optical signal having the same wavelength as an incoherent light inputted thereinto is provided. The module includes a substrate, a multi-layer crystal growth layer including a first area for amplifying the incoherent li... | 08/29/2006 |
| 7087447 | Method 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 |
| 7085440 | Semiconductor laser module and optical amplifier A semiconductor laser module includes a polarization direction transforming part which transforms polarization directions of first and second laser beams such that they are orthogonal to each other even if a polarization dependent optical isolator is utilized in the... | 08/01/2006 |
| 7079309 | Use of a photonic crystal for optical amplifier gain control An optical amplifier having a uniform gain profile uses a photonic crystal to tune the density-of-states of a gain medium so as to modify the light emission rate between atomic states. The density-of-states of the gain medium is tuned by selecting the size, shape, d... | 07/18/2006 |
| 7079738 | Method for manufacturing a glass doped with a rare earth element and fiber for optical amplification using the same An optical fiber for optical amplification, characterized in that a full width at half maximum of gain spectrum is 45 nm or more; and a maximum value of power conversion efficiency is 80% or more. A method for producing a rare earth element-doped glass for use in ma... | 07/18/2006 |
| 7076138 | Nanophotonic devices based on quantum systems embedded in frequency bandgap media The present invention describes nanophotonic materials and devices for both classical and quantum optical signal processing, transmission, amplification, and generation of light, which are based on a set of quantum systems having a discrete energy levels, such as at... | 07/11/2006 |
| 7068905 | Extended optical bandwidth semiconductor source An optical bandwidth source for generating amplified spontaneous emission (ASE) across a selected wavelength range, the optical bandwidth source including a waveguide having a first end and a second end, and comprising a plurality of separate wavelength gain subsect... | 06/27/2006 |
| 7039076 | Fiber amplifier system for producing visible light A light source is disclosed having a pulsed laser, a fiber amplifier optically coupled to the pulsed laser, and a nonlinear frequency converting element optically coupled to the fiber amplifier. The pulsed laser, e.g., a passively Q-switched laser, is configured to ... | 05/02/2006 |
