Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 5278854 | Signal amplification using optically activated bulk semi-insulating GaAs Bulk gallium arsenide having a high hold-off voltage is optically activated by a laser resulting in high power output. A high voltage input is applied to a semi-insulating gallium arsenide material. The gallium arsenide material is activated by laser ligh... | 01/11/1994 |
| 5258994 | Discharge-excited laser apparatus A discharge-excited laser apparatus includes a pair of discharge electrodes extending in a direction of an optical axis; a plurality of charging capacitors charged by a power source; a plurality of peaking capacitors arranged in parallel in a longitudinal... | 11/02/1993 |
| 5255282 | Open waveguide excimer laser A gas laser of the excimer type in which an open waveguide is employed, in which the excimer medium is moved to and through the open waveguide in a direction transverse to the optical axis. A discharge cell is defined by the upper and lower slabs of the o... | 10/19/1993 |
| 5245625 | High-frequency-excited laser for high output powers, particularly a CO.sub. 2 High-frequency-excited laser for high input powers, particularly a CO2 stripline laser. For supplying high-power high-frequency energy to a laser, a matching unit (2) for the impedance is integrated in the laser, whereby the matching unit (2) c... | 09/14/1993 |
| 5239551 | Microwave-driven UV solid-state laser A solid-state laser and method of operating the laser is described having a microwave driven (MWD) visible excimer fluorescence source for exciting a solid-state laser. The laser of this invention provides an efficient, compact, and tunable solid-state la... | 08/24/1993 |
| 5224117 | Gas lasers, in particular CO2 lasers A gas laser is designed with the following features: The laser is a slab laser, in which a plasma space (5) of a limited height is formed for the laser-active plasma between mutually opposing surfaces (11, 21) of two wall parts (10, 20); the wall parts (1... | 06/29/1993 |
| 5220576 | Slab or stripline laser Slab or stripline laser. In a slab or stripline laser that contains two electrodes (1, 26) and two resonator mirrors (2, 3), the electrodes (1, 26) are executed shape-stable and the mirrors (2, 3) and a second electrode (26) are secured to and carried by ... | 06/15/1993 |
| 5206875 | Gasdynamic CO laser In order to improve a gasdynamic CO laser, comprising an excitation region, in which a laser gas is excited, a supersonic nozzle, through which the laser gas flows, a laser-active region penetrated by a resonator beam path and a closed laser gas circuit, ... | 04/27/1993 |
| 5202894 | Electric supply device for one or more metal vapor lasers using an electric power charging circuit with a variable inductor to provide a variable charging gradient Electric supply device for at least one metal vapor laser includes a convertor for converting an a.c. voltage into a d.c. voltage of fixed amplitude. Means are provided for supplying a pulse voltage with a maximum amplitude that can be regulated. An elect... | 04/13/1993 |
| 5197079 | High-power stripline laser High-power stripline laser. In a high-power stripline laser, a high beam quality and mode purity is achieved in that the mutual spacing of two electrodes that form waveguide surfaces for the laser emission and limit a discharge space are adjustable in a l... | 03/23/1993 |
| 5140606 | RF excited CO2 slab waveguide laser A CO2 slab waveguide laser (10) is disclosed including a pair of spaced apart electrodes (36,38) having opposed light reflecting surfaces. The electrodes are dimensioned in a manner to guide light in a plane perpendicular to the reflecting surf... | 08/18/1992 |
| 5095490 | Asymmetric rf excited gas laser electrode configuration An asymmetric RF excited gas laser includes an elongated chamber, a first reflector and a second reflector, a first supporting mechanism, a ribbon of a metal conductor and a impedance-matching circuit. The elongated chamber is of cross-sectional dimension... | 03/10/1992 |
| 5089787 | Optically-coupled high frequency amplifier An optically-coupled high frequency amplifier is disclosed herein. The ampliifer of the present invention includes a laser and a receiver coupled by an optical beam. The amplifier further includes a modulator responsive to an input signal for modulating t... | 02/18/1992 |
| 5079773 | Tailored cross section optical waveguide laser array A phase-locked ridge waveguide gas laser includes a body that circumferentially bounds an elongated internal space extending along a longitudinal main plane and bisected by a longitudinal central plane. The internal space contains a gaseous lasing medium ... | 01/07/1992 |
| 5065405 | Sealed-off, RF-excited gas lasers and method for their manufacture An improved sealed-off RF-excited gas laser and method for its manufacture. The resonator section of the laser consists of four optically reflecting longitudinal walls which define the laser bore and plasma section. A concave mirror is mounted on one end ... | 11/12/1991 |
| 5062113 | Light source drive device A repetitive voltage signal, such as a sinusoidal wave, is supplied to the anode of a step-recovery diode through an inductor. A variable voltage source is connected to the cathode of the step-recovery diode. Conduction of the step-recovery diode and cut-... | 10/29/1991 |
| 5058122 | Microwave-excited high-power laser To provide more economical excitation of a high-power laser comprising a resonator having mirrors arranged in spaced, opposite relation to each other in the direction of a resonator axis and a beam path extending in both the direction of the resonator axi... | 10/15/1991 |
| 5048032 | Air cooled RF induction excited ion laser A laser structure utilizes air cooling and RF induction excitation of a gaseous active medium. A means for exciting the active medium is provided including a switching power supply utilizing pulse width modulated switching to provide an RF energy output. ... | 09/10/1991 |
| 5043995 | Process to electrically excite a laser gas The invention relates to a process to electrically excite a laser gas, especially a CO2 --He--N2 mixture, which is admitted at an angle, preferably perpendicular, to the axial laser gas discharge gap, and which is ignited by means of... | 08/27/1991 |
| 5013959 | High-power radiator A high-power radiator, especially for ultraviolet light, wherein in order to increase the efficiency in the case of UV high-power cylindrical radiators, the inner dielectrics (3) are very small in comparison with the outer dielectric tube. A privileged di... | 05/07/1991 |
| 5008894 | Drive system for RF-excited gas lasers A system for improved drive and matching between an RF power source and a plasma tube in a laser system. The system uses standard 50 or 75 ohm quarter wave transmission lines as the sole interconnect and matching elements between discharge electrodes and ... | 04/16/1991 |
| 5008896 | Gas laser having a discharge tube through which the gas flows in an axial direction The invention relates to a gas laser having a discharge tube, through which the gas flows in an aixal direction and to which high-frequency electrodes are fitted externally, and having a high-frequency generator. In order to obtain a simpler construction ... | 04/16/1991 |
| 4987577 | Gas laser having microwave excitation The gas discharge space into which microwaves are fed via a waveguide forms a laser housing in the form of a waveguide having a longitudinal ridge therein, the laser housing being preferably dimensioned such that its critical wavelength λk is ... | 01/22/1991 |
| 4980894 | Ignitor for the preionization of a gas-discharge laser An ignitor for a preionizing means of an excimer laser has an electrically conductive core which projects into the gas space of the laser and which is surrounded by a jacket of a fluoroplastic. The jacket is brought into sealing engagement with the wall o... | 12/25/1990 |
| 4978929 | Oscillator for supplying a gas discharge device An oscillator circuit for supplying a gas discharge path. A self-oscillating oscillator is controlled by pulses whose width, amplitude, and/or frequency are regulated as necessary to stabilize the oscillator output power, energy, and/or voltage.... | 12/18/1990 |
| 4945542 | Laser diode modulator The laser diode modulator disclosed herein employs a series of field-effect transistors provided with an input circuit utilizing a succession of inductive elements arranged to form a lumped element transmission line of essentially constant characteristic ... | 07/31/1990 |
| 4937834 | High-frequency discharge pumping laser device A high-frequency discharge pumping laser device is provided, applying a high-frequency voltage to a laser tube to produce laser oscillation. The high-frequency discharge pumping laser device comprises a high-frequency power supply for generating the high-... | 06/26/1990 |
| 4935933 | Laser oscillator device A laser oscillator device applies a high-frequency voltage to a plurality of discharge regions (1a, 1b) through a dielectric to produce a high-frequency discharge for laser pumping. The laser oscillator device includes high-frequency power supplies (26a, ... | 06/19/1990 |
| 4928248 | Light source driving device A light source driving device for driving a light source such as a semiconductor laser comprises an input voltage generating section for superposing a pulse voltage on a predetermined DC voltage to provide an input voltage, a voltage converting section ha... | 05/22/1990 |
| 4908524 | High voltage pulse power converter A high voltage pulse power converter comprises a modified type E pulse charging network (74) in series with a nonlinear magnetic switch (76). The network comprises a ladder of charging elements (78) each of which comprises a shunt section of a pulse charg... | 03/13/1990 |
| 4908585 | RF transformer and diagnostic technique therefor An RF transformer employs at least three elongated conductive elements in generally parallel spaced relationship. At least a first inductive element is connected between a pair of the conductive elements to provide a desired field distribution. A diagnost... | 03/13/1990 |
| 4903276 | Power supply for radio-frequency excited gas laser The power supply includes an oscillator (20) which generates a radio-frequency signal amplified by an amplifier (21). The amplified signal is applied to a laser (22) to initiate and maintain a discharge in the laser gaseous active medium. Power control me... | 02/20/1990 |
| 4891819 | RF excited laser with internally folded resonator A transversely RF excited gas laser with an internally folded resonator includes an elongated chamber of cross-sectional dimensions suitable for confining a laser gas discharge, a plurality of reflectors and a laser gas. The reflectors form a stable folde... | 01/02/1990 |
| 4890294 | Plasma apparatus The invention relates to a plasma apparatus where plasma is generated utilizing microwave discharge and laser excitation is performed and plasma processing is performed. More specifically, in a plasma apparatus where a microwave from a microwave oscillato... | 12/26/1989 |
| 4887272 | Laser oscillator device A laser oscillator device applies a high-frequency voltage to a plurality of discharge regions through a dielectric for producing a high-frequency discharge for laser pumping. The laser oscillator device has current detectors (CT2a, CT2b) for detecting cu... | 12/12/1989 |
| 4876693 | Integrated laser head and low inductance pulse forming circuit for pulsed gas lasers Integrated laser head apparatus is disclosed for producing high energy pulses in pulsed gas lasers. The present invention provides high energy pulses over short time durations suitable for laser rangefinder systems due to an improvement in the arrangement... | 10/24/1989 |
| 4875218 | Thin-film coated waveguide laser A radio frequency (RF) excited waveguide gas laser has a hollow waveguide defined by dielectric or lossy materials and metal electrodes coated by thin films with small absorptions so that the metal electrodes are separated from the filling gas and the wav... | 10/17/1989 |
| 4872178 | Output voltage detecting device in a laser oscillator Disclosed herein is an output voltage detecting device in a laser oscillator for which a matching circuit is connected between a high frequency power supply unit and a laser tube. The matching circuit is provided with reactance elements (31, 33) to which ... | 10/03/1989 |
| 4847852 | Ultra compact, RF excited gaseous lasers A laser comprising an RF matching unit having an RF power input and an RF power output, an optical cavity including electrode apparatus extending along the optical cavity, receiving the RF power output and defining a discharge gap having a gaseous lasing ... | 07/11/1989 |
| 4837789 | High frequency discharge excitation laser apparatus A high frequency discharge excitation laser apparatus, wherein the frequency of the drive power source of the laser tube is selected to a range of from 1 Megahertz to 10 Megahertz. In this case, the said drive power source may be constructed by solid state ... | 06/06/1989 |
