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| Number | Title | Issue Date |
| 4802183 | Microwave excited excimer laser and method A microwave pumped excimer laser and method.... | 01/31/1989 |
| 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 such as thallium, gallium, indium, silver and copper. The la... | 06/09/1987 |
| 4592057 | Versatile digital controller for light emitting semiconductor devices Drive current for a light emitting semiconductor device, such as an injection laser, is supplied by a digitally programmable current source capable of supplying any one of a plurality of different discrete current amplitudes. Light emitted by the device i... | 05/27/1986 |
| 4580270 | High-energy laser system having gyroscopically stabilized optical elements A high-energy laser system having gyroscopically stabilized optical elements includes an unstable confocal laser resonator having first and second spinning cavity feedback mirrors that resist mechanical wave energy induced spatial dislocations by gyroscop... | 04/01/1986 |
| 4578792 | High-power lasers A high-power flowing-gas laser comprises an outer housing, an optical system including a laser channel within the housing, an impeller driven by a motor for producing a flow of gas through the laser channel, and an independent mounting for mounting the op... | 03/25/1986 |
| 4575850 | Multiline emission integral mirror laser An integral mirror type laser system which produces miltiline emissions simultaneously and which is adapted for use in optical data processing systems. In particular, in a first embodiment, a unitary positive column laser comprises two sections, the first... | 03/11/1986 |
| 4575853 | Sealed laser A hard sealed CO2 laser tube includes an impermeable envelope with flanges and seals joined by weldment and ultrahigh vacuum. A total reflecting mirror at the input is hard sealed and cooled at its back side. The plasma tube and cooling jacket ... | 03/11/1986 |
| 4575855 | Ring laser gyro cathode arrangement A cathode arrangement for a ring laser gyro. A metal cathode member is sunken into a bore disposed in the gyro body to provide a low profile cathode arrangement. An annular groove is formed at the bottom of the bore around the periphery thereof. The catho... | 03/11/1986 |
| 4574380 | Self-optimizing electrode and pulse-stabilized super high power C.W. gas lasers An electrode assembly and a D.C. glow discharge system incorporating the electrode assembly. The system is stabilized by a lower pulse repetition rate (1 KHz-5 KHz) and power ( | 03/04/1986 |
| 4574381 | Apparatus for establishing and maintaining a stable discharge across a stream of flowing gas, particularly useful for high-power lasers Apparatus for establishing and maintaining a stable discharge across a stream of flowing gas, particularly useful for high-power lasers, comprises working electrodes disposed on opposite sides of the gas flow channel, and starting electrodes adjacent to t... | 03/04/1986 |
| 4573156 | Single mode laser emission Disclosed is an optical device producing single mode laser emission. The device includes a semiconductor laser which would normally emit a number of closely spaced longitudinal modes and a filter which receives light from the laser active layer and reflec... | 02/25/1986 |
| 4573159 | Temperature-controlled laser apparatus A laser apparatus comprises a laser tube supported by a plurality of mounts on a supporting plate, a case housing the laser tube, temperature sensors positioned on the mounts or the supporting plate near the mounts or the laser tube, and a plurality of fa... | 02/25/1986 |
| 4571727 | Far-infrared electromagnetic wave generator A far-infrared electromagnetic wave generator comprises a semiconductor containing at least one impurity which has an energy difference, close to a quantum energy of optical phonon, between its transition levels; a resonator having two reflectors for effe... | 02/18/1986 |
| 4571730 | Cross flow type laser devices In a cross flow type laser device of the type comprising a cylindrical vacuum vessel, guide ducts for defining a laser medium circulating path, a fan for circulating the laser medium through the circulating path, discharge electrodes installed in the vacu... | 02/18/1986 |
| 4571726 | High performance orotron utilizing a dense electron beam A method and apparatus for increasing the power output and efficiency of an orotron generating near millimeter wavelength radiation. In accordance with a theory of orotron operation described herein and confirmed experimentally, the ribbon-like electron b... | 02/18/1986 |
| 4569053 | Laser tuner assembly An improved laser tuner assembly of the type that includes a plurality of parallel, spaced-apart, birefringent plates comprises means for independently adjusting the orientations of the individual plates, clamping means for demountably securing the positi... | 02/04/1986 |
| 4567596 | Laser apparatus A harmonic amplifier for a laser beam amplifies a harmonic frequency of the beam. The amplifier generates a series of electric fields across the beam, successive fields being directed oppositely. The spacing between the fields is related to the speed of p... | 01/28/1986 |
| 4567597 | High power laser system A laser system including a lasing medium (gas, liquid or solid) in an annular configuration with means defining a stationary lasing region in a portion of the lasing medium and means for rotating the lasing medium to rotate heated portions of the medium i... | 01/28/1986 |
| 4566107 | Laser apparatus A laser apparatus includes two sets of pumping arrangements for providing pumping energy for a laser medium used in common, each comprising a reflector with a reflective surface which defines an elliptical cavity and a pumping source located along a focal... | 01/21/1986 |
| 4564947 | High-power lasers A high-power flowing-gas laser comprises an outer housing, an optical system including a laser channel within the housing, and an impeller for producing a flow of gas through the laser channel. The laser channel is folded so as to be constituted of a plur... | 01/14/1986 |
| 4564948 | Gas laser tube A gas laser tube with a vacuum envelope, includes: a tubular section formed of an electrically insulating material with a coefficient of thermal expansion H1 ; an end section formed of an electrically insulating material with a coefficient of therma... | 01/14/1986 |
| 4563763 | Method and apparatus for cooling a slab laser In a high average power slab laser, heat generated in the laser slab is conducted through a thin layer of thermally conductive gas, such as hydrogen, helium or air, and then through an optically transparent window into a flow of liquid coolant. In a prefe... | 01/07/1986 |
| 4562579 | Light beam modulating and deflecting system A light beam modulating and deflecting system comprising a stationary electrode secured to a stationary body, and a rotatable electrode secured to a rotating body, on which a light source is mounted, and opposed in slightly spaced relation to the stationa... | 12/31/1985 |
| 4562580 | Photolytic improvement of dye laser lifetimes The effective lasing lifetime of coumarin 102 in 50:50 ethylene glycol is gnificantly extended by increasing the rate of pumping and photolysis, with a flashlamp in a laser system having a pyrex ultraviolet filter and an inert cover gas.... | 12/31/1985 |
| 4559628 | Shear layer control in a free-vortex aerodynamic window A boundary-controlled aerodynamic window positioned adjacent the exit aperture of a gas laser is transparent to the laser beam emitted from the cavity of the laser. The boundary-controlled aerodynamic window is formed by a high velocity gas flow directed ... | 12/17/1985 |
| 4558452 | Narrow bandwidth laser apparatus Laser apparatus having a very narrow ( | 12/10/1985 |
| 4558450 | Cathode bleed arrangement for electrically excited flowing gas lasers A high power, electrically excited laser is disclosed wherein a laser gas is caused to flow through an excitation region in which an electric discharge is established along a direction transverse to the direction of flow of the laser gas between an anode ... | 12/10/1985 |
| 4556980 | Laser light sources A light source comprises a semiconductor laser and a gas laser. The semiconductor laser is injection locked using the highly coherent output from the gas laser. The output from the semiconductor laser has a narrow linewidth and a high stability. The inven... | 12/03/1985 |
| 4556979 | Piezoelectrically tuned short cavity dye laser A picosecond short cavity dye laser utilizes a piezoelectric translator to vary the length of the optical cavity in the laser to allow continuous tuning of the output wavelength. The laser includes a pair of closely spaced generally flat mirrors forming a... | 12/03/1985 |
| 4556981 | Laser of the TE type, especially a high-energy laser Laser of the TE type, including a gas-tight housing defining a laser chamber having a gas space, at least two laser electrodes disposed parallel to the optical axis of the laser within the housing, the electrodes being disposed mutually opposite and at a ... | 12/03/1985 |
| 4555786 | High power solid state laser A kilowatt average power solid state laser employs a reciprocating slab of Nd:glass to effectively average the thermal loading thereof.... | 11/26/1985 |
| 4555787 | Gas laser preionization device A gas laser having preionization means which comprises an elongated glass tube extending beside the glow discharge volume for the length of the laser cavity, there being a central conductor inside the tube and a conductive strip or spaced strips bonded to... | 11/26/1985 |
| 4554666 | High-energy, single longitudinal mode hybrid laser The use of a Galilean telescope, situated in between the two lasing mediums that are located within the resonant cavity of a single longitudinal mode hybrid laser, increases the effective mode volume and, hence, the amount of lasing energy that can be der... | 11/19/1985 |
| 4553243 | Chemical laser There is provided a high repetition rate chemical laser comprising in combination a mixing chamber, an inlet for continuously introducing reactants into the chamber, a supersonic nozzle constituting an exit from the mixing chamber, a laser cavity located ... | 11/12/1985 |
| 4553238 | Fiber optic amplifier A pair of small diameter optical fibers are arranged in a side-by-side configuration, the first fiber providing a passive guide for pump light, and the second fiber formed of a material, such as Nd:YAG which has amplifying properties at the signal frequen... | 11/12/1985 |
| 4553244 | Laser beam energy profile synthesizer The annular energy distribution in the output beam of a laser having an unstable resonator is evenly distributed across the entire beam profile by a synthesizer comprising a pair of mirrors adjacent to the output end of the resonator and operative on the ... | 11/12/1985 |
| 4553240 | Gas laser with a spring-supported capillary In a coaxially constructed gas laser with a capillary fused at one end to the glass casing surrounding it and enclosed at its free end by a supporting spring the supporting spring contains a perforated disc of a material adapted thermally to the jacket gl... | 11/12/1985 |
| 4553242 | Gas laser A gas laser of circular cross section perpendicular to the direction of beam propagation and having an optical resonator is disclosed. The laser has, for continuous or modulated continuous beam operation, a metal tube as inside conductor, which is connect... | 11/12/1985 |
| 4550410 | Coupled-cavity laser A laser employs a Fabry-Perot etalon, coupled to an optical cavity, to control either the power or the frequency of the laser substantially independently.... | 10/29/1985 |
| 4550408 | Method and apparatus for operating a gas laser Methods and apparatuses for operating a gas laser which utilize the electrical discharge between the electrodes to increase gas circulation. In a first embodiment, electrical discharges cause a control current (pulse) which activates an electromechanical ... | 10/29/1985 |
