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7616669 |
High energy pulse suppression method
A laser processes a workpiece with laser pulses delivered at random time intervals and at substantially constant energy levels by characterizing the laser cavity discharge behavior and utilizing...
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7609740 |
Method and arrangement for the excitation of a gas laser arrangement
For exciting a gas laser arrangement with a plurality of HF signals, at least two pulsed HF signals are generated arid at least two electrodes or pairs of electrodes of the gas laser arrangement...
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7532652 |
Laser thermal management systems and methods
A laser system thermal management system includes a laser gain assembly and a thermal management assembly. The laser gain assembly includes a laser gain medium and may include laser pump diodes....
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7453917 |
Supersonic all gas-phase iodine laser
A continuous wave laser based on the electronic I*( 2 P ½ )−I( 2 P 3/2 ) transition of atomic iodine at 1.315 microns from the NCl(a 1 Δ)+I( 2 P 3/2 ) energy transfer reaction using a...
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7274724 |
Method, system and apparatus for an enhanced electrically pumped oxygen iodine laser
In one embodiment of the present invention an oxygen iodine laser includes a gas mixing section. Ground state oxygen and a carrier gas are introduced into the first gas mixing section, sometimes...
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7224868 |
Radiation-free optical cavity
The present invention provides a micro-resonator including a plurality of waveguides forming optic junctions therebetween, with adjacent waveguides having different core permittivities and...
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7116696 |
Efficient method and apparatus for generating singlet delta oxygen at an elevated pressure
An improved singlet delta oxygen generator (SOG) and method of its use are disclosed. The improved SOG is compact and scalable, capable of operating in a zero-gravity or low gravity environment,...
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7088759 |
Resonator box to laser cavity interface for chemical laser
A laser system ( 52 A) is illustrated having a laser cavity ( 54 ) that generates a laser beam ( 78 ). An outcoupling resonator box ( 62 ) has a reflective mirror ( 70 ) therein. A return resonator...
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7039088 |
Enhancement of chemical lasers via control of the ambient radiation environment
A system and method for obtaining improved performance of chemical laser systems by exercising control over the radiation environments of these devices. Proper control of the AERE is achieved...
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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 CO 2 lasers, mini to conventional types, providing low divergent output. By varying...
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6947454 |
Laser pulse picking employing controlled AOM loading
A laser ( 126 ) and an AOM ( 10 ) are pulsed at substantially regular and substantially similar constant high repetition rates to provide working laser outputs ( 40 ) with variable nonimpingement...
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6944202 |
Surface catalyst infra red laser
An energy converter reacts hydrocarbons and air on a catalyst configuration to produce a population inversion. A photovoltaic system may extract the radiating energy, and a laser system may extract...
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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...
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6922428 |
Gas laser apparatus for lithography
The present invention relates to a long pulse gas laser apparatus for lithography further improved in the laser oscillation efficiency and stability increased by addition of xenon gas. A gas laser...
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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...
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6868106 |
Resonator optics for high power UV lasers
An excimer or molecular fluorine laser system includes a discharge chamber filled with a laser gas mixture at least including a halogen-containing molecular species and a buffer gas, multiple...
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6847672 |
Laser gas supply path structure in an exposure apparatus
A gas supply path structure forms a fluid path for allowing a laser gas to flow into or out of a pair of fluid inlet and outlet 11 a and a laser gas is controlled to a predetermined subsonic...
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6826203 |
High yield DFB laser with effective reject selection
The present invention relates to a high yield DFB laser with an effective reject selection using criteria on threshold current. The demand for high output power often will require use of lasers...
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6819699 |
Arf excimer laser device, scanning type exposure device and ultraviolet laser device
A buffer gas contained in a laser gas used for an ArF excimer laser mainly consists of He, and Xe is preferably added to the laser gas. Mixture piping divided by valves is disposed on piping...
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6813304 |
High energy DF chemical laser gain generator and related method for its fabrication
A DF or HF chemical laser gain generator fabricated by a platelet technique in which internal passages are more easily formed because the generator is made as a stack of thin platelets that are...
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6788714 |
Laser marking system and method
Diamonds are marked by a laser beam having a characteristic that is changeable by positioning a selected aperture in the beam within a resonant cavity of a laser source. Guidelines are positioned...
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6768762 |
High repetition rate UV excimer laser
The invention relates to an High Repetition Rate UV Excimer Laser which includes a source of a laser beam and one or more windows which include magnesium fluoride. Another aspect of the invention...
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6693944 |
Sputtering metal ion laser
Internal mirror sputtering metal ion lasers are disclosed which employ laser mirrors and a resonator internal to and integral with the laser plasma tube. Preferred lasers use silver, copper, gold...
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6690702 |
Excimer laser oscillation apparatus and method, excimer laser exposure apparatus, and laser tube
In an excimer laser oscillation apparatus including a laser chamber ( 20 ) constituted by a laser tube ( 2 ) for storing a laser gas containing a gas mixture of at least one inert gas selected from...
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6683900 |
Solid state laser apparatus
A cavity has a longitudinal hollow having opposite open ends. An excitation source, such as a YAG rod, is accommodated in the hollow of the cavity. A hollow, cylindrical rod holder is inserted into...
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6674781 |
Method and system for fueling a closed cycle chemical oxygen iodine laser
A method of utilizing lithium hypochlorite and hydrogen peroxide to generate singlet delta oxygen, which is used as fuel for a COIL device. The invention also comprises a method of regenerating...
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6671302 |
Device for self-initiated UV pre-ionization of a repetitively pulsed gas laser
A device for use with a repetitively pulsed gas laser provides self-initiated UV preliminary ionization of the active volume of a laser, which has extended high-voltage and grounded electrodes...
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6636545 |
Supersonic and subsonic laser with radio frequency excitation
Disclosed is a gas laser utilizing radio frequency excitation in the area of sonic or supersonic/subsonic transfer gas flow. The laser uses various types of gases and mixtures of gases as the...
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6580742 |
Laser oscillating apparatus
An orifice ( 254 ) is disposed near the junction of a discharge tube ( 1 ) and a laser gas lead-in pipe ( 242 ). A laser gas relay pipe ( 244 ) is disposed so as to allow the laser gas to flow...
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6535539 |
Excimer laser device
An excimer laser device which neither corrodes due to a laser gas nor contaminates the laser gas is provided. For this purpose, in an excimer laser device including a cross flow fan ( 1 ) disposed...
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6501780 |
Method, system and apparatus for an electrically assisted chemical oxygen iodine laser
A method, apparatus and system are provided herein for an electrically assisted chemical oxygen iodine laser. The preferred system, in accordance with the present invention, includes a laser...
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6466600 |
Laser tube for high-frequency laser and laser incorporating same
An HF-excited gas laser has a laser tube of ceramic material containing a laser gas, and the tube includes a chemical component which will preclude passage therethrough of secondary radiation of a...
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6442186 |
Stable multi-fold telescopic laser resonator
A stable multi-fold telescopic resonator is applied to a slab laser to provide a high power laser beam of a high optical quality. The current invention could be applied to both waveguide and...
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5974072 |
High energy airborne coil laser
A high energy chemical laser capable of being operated in an aircraft to interdict and destroy theater ballistic missiles is provided. A key to the chemical laser of the invention is the use of...
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5883916 |
Integrated valve and flow control apparatus and method for chemical laser system
There is provided a cylindrical valve 20 for placement in the flow path of a singlet-delta oxygen generator 12 that feeds O 2 * to a chemical laser gain medium 14. The feed path 22 includes a sharp...
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5870422 |
Gain generator for high-energy chemical lasers
A gain generator 10 for use in high-energy flowing gas lasers such as COIL devices comprises a chemical reactant mixing nozzle 12 disposed in a gain medium 16. The nozzle includes a plurality of...
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5802095 |
Oxygen-iodine laser
In order to improve an oxygen-iodine laser comprising a reaction unit for the generation of a gas stream composed of excited oxygen by chemical reaction between a reaction liquid and a reaction...
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5682400 |
Supersonic and subsonic laser with high frequency discharge excitation
Disclosed is a gas laser utilizing high frequency discharge excitation in the area of sonic or supersonic/subsonic transfer gas flow. The laser uses various types of gases and mixtures of gases as...
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5633541 |
Magnetohydrodynamic electric generator
A magnetohydrodynamic electric generator is disclosed, which is so devised that the coherent light generated in it by electrical stimulation, heat induction and/or gas expansion is collected and...
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5384802 |
Laser apparatus
A laser device utilizes a turbojet engine to provide a stimulation source. The turbojet engine is conventional, having a compression section, a fuel injection and igniting section, and an...
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5206876 |
Gasdynamic CO laser
In order to improve a gasdynamic CO laser comprising a gas supply means supplying a laser gas, an excitation region, in which the laser gas is excited, a supersonic nozzle arranged downstream of...
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5163062 |
Method of frequency shifting using a chromium doped laser transmitter
A chromium doped solid-state high peak-power laser transmitter emits at a 4861.342 or 4340.5 Angstrom Fraunhofer line, lines of peak blue-seawater transmission and minimum solar radiation. A pink...
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5117434 |
Metal vapor laser apparatus
A metal vapor laser has a discharge tube with electrodes at opposite ends. A power source is electronically connected to the electrodes and generates a discharge in a discharge region within the...
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5093836 |
Purely chemical process yielding continuous laser amplification in the visible and ultraviolet spectral ranges
A chemical process yielding laser amplification and oscillation in the visible and ultraviolet spectral ranges comprising the steps of chemically reacting metal polymers with halogen atoms to form...
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4961200 |
Process and generator for generating atomic iodine in the fundamental state, and iodine chemical laser employing such
An iodine chemical laser is disclosed comprising: a laser cavity; a combustion chamber; a first injector injecting into said combustion chamber an iodine compound as a fuel; a first supply means...
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4928286 |
Hypersonic gasdynamic laser system
A visible, or near to mid infra-red, hypersonic gasdynamic laser system incorporated in a hypersonic vehicle which provides high enthalpy ram air for thermodynamic excitation of the laser gases....
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4862100 |
Gas laser generator
Gaseous flux laser generator of the nitrogen and carbon dioxyde type. The dimensions of the enclosure and the conditions of injection of the nitrogen and those of the electrical supply are chosen...
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4849983 |
Process and apparatus for obtaining an excimer and application to lasers
Process and apparatus for obtaining an excimer and application to a laser. The apparatus comprises a compression chamber (9), compressor (11) for compressing the gaseous mixture R+XY+M in the...
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4841537 |
Medium for gas laser excited by ionizing particles
A medium for a gas laser excited by ionizing particles containing helium, neon, argon or krypton with a total concentration in excess of 10 19 cm -3 with argon or krypton concentration ranging...
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4785461 |
Premixed cold reaction CW laser nozzle
The premixed cold reaction CW chemical laser places the secondary injectors which input fuel and/or diluent in the exit walls of the primary nozzle. These injectors are acutely angled thereto and...
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