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| Number | Title | Issue Date |
| 7359514 | Narrow-band single-photon source and QKD system using same A narrow-band single-photon source (10) is disclosed, along with a QKD system (200) using same. The single-photon source is based on spontaneous parametric downconversion that generates signal and idler photons (PS and PI) as an entangled photon pair. ... | 04/15/2008 |
| 7339973 | Electrodes for fluorine gas discharge lasers Fluorine gas discharge laser electrodes and electrode systems that may comprise a plurality of current return tangs extending for less than the respective length of the second elongated gas discharge electrode. In addition electrodes may comprise a first discharge s... | 03/04/2008 |
| 7301980 | Halogen gas discharge laser electrodes A gas discharge laser includes a laser chamber containing a halogen laser gas, two electrode elements defining a cathode and an anode, each having a discharge receiving region defining two longitudinal edges and having a region width defining a width of an electric ... | 11/27/2007 |
| 7274722 | COslab laser CO2 slab laser having a gas-filled tubular housing, sealed off at both ends by end pieces, which accommodates two overlapping electrodes extending into the tubular housing and mirrors arranged in the region of the electrodes, where each of the two end pie... | 09/25/2007 |
| 7266137 | Laser gas replenishment method Output beam parameters of a gas discharge laser are stabilized by maintaining a molecular fluorine component at a predetermined partial pressure using a gas supply unit and a processor. The molecular fluorine is subject to depletion within the discharge chamber. Gas... | 09/04/2007 |
| 7230965 | Anodes for fluorine gas discharge lasers Electrodes for a fluorine gas discharge laser are disclosed which may comprise a crown straddling the centerline axis between the pair of side walls and the pair of end walls, comprising a first material, forming at least a portion of the discharge region of the ele... | 06/12/2007 |
| 7230967 | Waveguide 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 |
| 7217659 | Process for producing materials for electronic device A process for producing an electronic device material of a high quality MOS-type semiconductor having an insulating layer and a semiconducting layer. The process includes a step of CVD-treating a substrate to be processed having single-crystal silicon as a main comp... | 05/15/2007 |
| 7215697 | Matched impedance controlled avalanche driver Controlled avalanche driver circuits and apparatuses for gas lasers. One embodiment typically delivers short, rapid, high voltage ionizing pulses in combination with an electric field whose magnitude is too low to sustain a normal glow discharge. The plasma is typic... | 05/08/2007 |
| 7199592 | Method and apparatus for applying microwaves to measure the moisture content of material Apparatus for ascertaining the mass and/or the moisture content of successive increments of a running rod containing tobacco and/or filter material for tobacco smoke has a resonator housing with a cylindrical internal chamber which is disposed between an inlet and a... | 04/03/2007 |
| 7197060 | Waveguide 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 |
| 7196342 | Systems and methods for reducing the influence of plasma-generated debris on the internal components of an EUV light source Systems and methods are disclosed for reducing the influence of plasma generated debris on internal components of an EUV light source. In one aspect, an EUV meteorology monitor is provided which may have a heater to heat an internal multi-layer filtering mirror to a... | 03/27/2007 |
| 7190708 | Annealed copper alloy electrodes for fluorine containing gas discharge lasers An excimer laser with a laser chamber containing a circulating laser gas containing fluorine and long-life, annealed, copper alloy electrodes. Electrode lifetime is increased by annealing them after the electrodes are machined. This annealing relieves the surface st... | 03/13/2007 |
| 7138860 | System and method for envelope modulation A power control system for a satellite receiving radio-frequency signals includes a digital processor and a traveling wave tube amplifier system and corresponding traveling wave tube. An anode voltage of the traveling wave tube amplifier system is used to modulate o... | 11/21/2006 |
| 7132123 | High rep-rate laser with improved electrodes The present invention provides a gas discharge laser having at least one long-life elongated electrode for producing at least 12 billion high voltage electric discharges in a fluorine containing laser gas. In a preferred embodiment at least one of the electrodes is ... | 11/07/2006 |
| 7095774 | Cathodes for fluorine gas discharge lasers A fluorine gas discharge laser electrode for a gas discharge laser having a laser gas containing fluorine and a method for manufacturing an electrode is disclosed. The electrode may include a copper and copper alloy body having an upper curved region containing a di... | 08/22/2006 |
| 7075963 | Tunable laser with stabilized grating A line-narrowing module for a laser includes a prism beam expander and a grating preferably attached to a heat sink. A pressure-controlled enclosure filled with an inert gas seals the grating and/or other elements of the line-narrowing module. The pressure in the en... | 07/11/2006 |
| 7058093 | Q-switched, cavity dumped laser systems for material processing This disclosure discusses techniques for obtaining wavelength selected simultaneously super pulsed Q-switched and cavity dumped laser pulses utilizing high optical damage threshold electro-optic modulators, maintaining a zero DC voltage bias on the CdTe electro-opti... | 06/06/2006 |
| 7050475 | Waveguide 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... | 05/23/2006 |
| 7046713 | Discharge laser with porous layer covering anode discharge surface A gas discharge laser having an elongated cathode and an elongated anode with a porous insulating layer covering the anode discharge surface. A pulse power system provides electrical pulses at rates of at least 1 KHz. A blower circulates laser gas between the electr... | 05/16/2006 |
| 7045791 | Column simultaneously focusing a partilce beam and an optical beam The invention concerns a column for producing a focused particle beam comprising: a device (100) focusing particles including an output electrode (130) with an output hole (131) for allowing through a particle beam (A); an optical focusing devic... | 05/16/2006 |
| 7046709 | COwaveguide laser with beryllium oxide waveguides A pulsed, Q-switched, waveguide CO2 laser includes a plurality of waveguide channels formed in a block of a beryllium oxide ceramic material and is operated at a wavelength between about 9.2 and 9.7 micrometers. The laser has an output power up to 55% greater than t... | 05/16/2006 |
| 7039079 | Pulsed COlaser including an optical damage resistant electro-optical switching arrangement A laser includes a gain medium located in a laser resonator. The gain medium generates plane polarized radiation plane polarized in a first polarization orientation. An electro-optical switch is located in the resonator. When the switch is activated the polarization... | 05/02/2006 |
| 7008549 | Circuit board, process for producing the same and a power module employing the same Composite member 2 consisting of ceramic insulator substrate 3 and two metal layers 4A and 4B such as aluminum sheets is subjected to milling in order to remove the unwanted areas of metal layer 4A (where inter-element spacings are... | 03/07/2006 |
| 7003012 | Discharge laser with porous insulating layer covering anode discharge surface A gas discharge laser having an elongated cathode and an elongated anode with a porous insulating layer covering the anode discharge surface. A pulse power system provides electrical pulses at rates of at least 1 KHz. A blower circulates laser gas between the electr... | 02/21/2006 |
| 6998620 | Stable energy detector for extreme ultraviolet radiation detection A detector for use with an EUV photon source emitting around 11-15 nm includes at least one multilayer mirror for reflecting the beam along an optical path include a detector element, a filter for reducing the bandwidth of the beam, and the detector element. The det... | 02/14/2006 |
| 6950453 | Pulser driven, helium free transversely excited atmospheric-pressure (TEA) CO2 laser A novel and inexpensive excitation circuit based on a single switch and a single source drives helium-free TEA CO2 lasers, mini to conventional types, providing low divergent output. By varying the partial pressure of either CO2 or N2 | 09/27/2005 |
| 6937635 | High rep-rate laser with improved electrodes The present invention provides a gas discharge laser having at least one long-life elongated electrode for producing at least 12 billion high voltage electric discharges in a fluorine containing laser gas. In a preferred embodiment at least one of the electrodes is ... | 08/30/2005 |
| 6914927 | Laser discharge chamber passivation by plasma Methods and apparatus are provided for cleaning and passivating laser discharge chambers with plasmas. In one embodiment, an oxygen based plasma is formed in a plasma source external to the laser discharge chamber by applying a radiofrequency signal to oxygen contai... | 07/05/2005 |
| 6907058 | Energy monitor for molecular fluorine laser A beam parameter monitoring unit for coupling with a molecular fluorine (F2) or ArF laser resonator that produces an output beam having a wavelength below 200 nm includes a detector and a beam path enclosure. The unit may also include a beam splitter with... | 06/14/2005 |
| 6847670 | Gas laser apparatus emitting ultraviolet radiation The oscillation pulse width is extended in a gas laser apparatus emitting ultraviolet radiation by a high-repetition rate oscillating operation. The gas laser apparatus has a pair of laser discharge electrodes connected to the output terminals of a magnetic pulse co... | 01/25/2005 |
| 6782031 | Long-pulse pulse power system for gas discharge laser A long pulse power system for gas discharge lasers. The system includes a sustainer capacitor for accepting a charge from a high voltage pulse power source. A peaking capacitor with a capacitance value of less than half the sustainer capacitance provides the high vo... | 08/24/2004 |
| 6782030 | Gas laser The present invention relates to a gas laser with a high-voltage electrode 12 and a ground electrode 14, which electrodes 12, 14 are disposed relative to each other so as to form a discharge gap 16 between them, and with high voltage gene... | 08/24/2004 |
| 6782029 | Dedusting unit for a laser optical element of a gas laser and method for assembling A dedusting unit for a laser optical element is provided. The dedusting unit comprises a high-voltage duct comprising a high-voltage conducting core having a first end and a second end and an insulator element disposed around the core. The first end of the core is c... | 08/24/2004 |
| 6757315 | Corona preionization assembly for a gas laser A preionization device for a gas laser includes an internal preionization electrode having a dielectric housing around it such that the preionization device is of corona type. The internal electrode connects to advantageous electrical circuitry, preferably external ... | 06/29/2004 |
| 6744802 | Laser oscillating apparatus with slotted waveguide In a slot array structure, electromagnetic wave emission which is uniform as a whole over the length of a laser tube is realized to allow uniform laser emission with minimum energy loss. Slots (10) are formed at a predetermined pitch in a long end face (H pla... | 06/01/2004 |
| 6728284 | High power solid state laser modulator A multi-stage magnetic modulator provides a pulse train of ±40 kV electrical pulses at a 5-7 kHz repetition rate to a metal vapor laser. A fractional turn transformer steps up the voltage by a factor of 80 to 1 and magnetic pulse compression is used to reduce the p... | 04/27/2004 |
| 6665486 | Single photon generating apparatus A single photon generating apparatus includes an optical waveguide, an active medium section and a resonator section. In the active medium section, a single electron is excited in response to application of exciting energy, and a single photon is emitted ... | 12/16/2003 |
| 6650678 | Laser oscillating apparatus A plasma is excited uniformly as a whole over the length of each slot. A laser oscillating apparatus is designed to excite a laser gas in a laser tube (2) by introducing electromagnetic waves into the laser tube through a plurality of slots (10) formed in... | 11/18/2003 |
| 6650679 | Preionization arrangement for gas laser A preionization device for a gas laser comprises an internal preionization electrode having a dielectric housing around it and an external preionization electrode displaced from the dielectric housing by a small gap. The dielectric housing includes two cy... | 11/18/2003 |
