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| Number | Title | Issue Date |
| 4852106 | Optical system for producing controlled beat frequency An optical system for producing an optical output having a beat frequency. The shifter has a beam splitter for splitting a laser radiation generated by a laser source, into a first and a second laser beam, and includes an acoustooptical modulator for defl... | 07/25/1989 |
| 4847850 | Continuum generation with miniaturized Q-switched diode pumped solid state laser A miniaturized Q-switch is added to the resonant cavity of a compact laser diode pumped solid state laser to produce short high peak power pulses which are input into a single mode optical fiber to form a compact continuum generator. Q-switching the compa... | 07/11/1989 |
| 4845719 | Ultrasonic laser modulator An ultrasonically modulated laser comprises a laser oscillation tube including opposing ends for generating a beam of planar polarized light having a plurality of wavelenghts; an output mirror at one end of the tube for reflecting the light beam; and a mo... | 07/04/1989 |
| 4792930 | Acoustooptic device capable of internally cooling an acoustooptic element In an acoustooptic device for use in acoustooptically controlling a laser beam in response to an electric signal, an acoustooptic element is packaged in a housing which defines an internal space therein and which can circulate a coolant in the internal sp... | 12/20/1988 |
| 4761786 | Miniaturized Q-switched diode pumped solid state laser A miniaturized Q-switch is added to the resonant cavity of a compact laser diode pumped solid state laser to produce short high peak power pulses. Q-switching the compact diode pumped solid state lasers takes advantage of the relatively high gain and shor... | 08/02/1988 |
| 4756003 | Laser diode pumped solid state laser A neodymium or other rare earth doped solid state laser is pumped by a matched high efficiency laser diode, including a diode array and a multi-spatial mode extended emitter diode, resulting in a compact, high efficiency and long lifetime laser assembly. ... | 07/05/1988 |
| 4736378 | Integrated acousto-optic mode locking device for a mode locked laser system The subject of the invention is a device synchronizing modes of the laser, fastened in its resonance cavity, in a housing 1 having its inner temperature stabilized, which contains an acousto-optical modulator whose buffer 5, functioning at the same time a... | 04/05/1988 |
| 4707835 | Rapid wavelength switching of IR lasers with Bragg cells Apparatus is provided for rapidly switching among discrete wavelengths within the output spectrum of a gas laser. A portion of the radiation in a primary optical cavity of a laser is transmitted by a partially reflective surface into a secondary cavity wh... | 11/17/1987 |
| 4700351 | Active Q-switched laser cartridge An active Q-switch integral laser cartridge is made of an acoustic transmitting body having a photoelastic laser medium in a part thereof for propagating and coupling both optical and acoustic waves. The photoelastic laser medium and the acoustic transmit... | 10/13/1987 |
| 4665524 | Mode locked laser light sources A mode-locked laser light source, i.e. a light source in which resonant longitudinal modes of the laser cavity are synchronized in phase to produce a pulsed laser output, is provided with an optical phase-lock loop, to lock the optical output pulse train ... | 05/12/1987 |
| 4630275 | Controlled slow Q-switch By applying to a laser Q-switch a staircase-shaped control signal, a plurality of laser pulses are emitted with controlled energy and time separation. Compared with conventional Q-switching, the invention enables the laser to emit pulses with shorter time... | 12/16/1986 |
| 4586184 | Acoustically controlled frequency shifted cavity for electromagnetic radiation A frequency shifted cavity apparatus for electromagnetic radiation. The cavity filters electromagnetic radiation wherein the instantaneous frequency increases and changes non-linearly in time. The cavity can optionally include an optical amplifier with su... | 04/29/1986 |
| 4461005 | High peak power, high PRF laser system A laser system and method is disclosed which is capable of producing high peak power, high pulse rates, and narrow pulses. The invention comprises an acousto-optic shutter and a frustrated total internal reflectance Q-switch in a unique configuration whic... | 07/17/1984 |
| 4432613 | Exposure light beams control method for use in a picture reproducing machine A method for controlling exposure light beams for use in a picture reproducing machine such as a color scanner and a color facsimile, wherein a light beam is supplied to an acoustooptical deflector and is deflected thereby to obtain diffraction light beam... | 02/21/1984 |
| 4412330 | Q-Switched laser with stable output and method of making the same The Q-switched laser gating pulses of an acousto-optic Q-switch are synchronized electrically to the phase of the RF signal driving the Q-switch by applying the RF oscillator output signals to the clock input of an integrated circuit D-type flip-flop and ... | 10/25/1983 |
| 4371964 | Circuit arrangement for controlling a multi-beam acousto-optical cell in which Bragg diffraction is used for the generation of a plurality of outgoing laser beams A circuit arrangement for controlling a multi-beam acousto-optical cell in which Bragg diffraction is used for the generation of a plurality of outgoing laser beams, in which the acousto-optical cell has at least one ultrasonic transducer from which the o... | 02/01/1983 |
| 4337442 | First laser pulse amplitude modulation The initially high amplitude laser output pulses at the start of a string of pulses from a continuously pumped, repetitively, Q-switched Nd:YAG laser are reduced in amplitude by reducing the current to the krypton arc lamp pumping light source by about 5 ... | 06/29/1982 |
| 4308506 | Fast acousto-optic Q-switch laser A fast acousto-optic Q-switch laser is taught comprising a lasing medium, reflecting means mounted substantially perpendicular to the longitudinal axis of the lasing medium and spaced from a first end thereof, feedback reflecting means spaced from a secon... | 12/29/1981 |
| 4229079 | Electro-optic modulator with improved acousto-optic suppression, heat transfer and mechanical support An improved electro-optic moduator device is disclosed which provides strain-free mounting of an electro-optic crystal within a housing assembly and suppression of acousto-optic effects within the crystal. An acoustic matching liquid having an acoustic im... | 10/21/1980 |
| 4227159 | Common-resonator pre-locked laser A common-resonator pre-locked laser is formed by a jet stream dye pumped simultaneously by a CW laser and a pulsed laser. Laser pulses with greater than 100 W peak power in a band width of less than about 54 MHz are produced.... | 10/07/1980 |
| 4115747 | Optical modulator using a controllable diffraction grating The combination of an electro-optic substrate the refractive index of which is changed by an electric field applied to the same and a pair of comb-shaped interdigital diffraction electrodes formed on the surface of said substrate provides an electrically ... | 09/19/1978 |
| 4105953 | Chirped acousto-optic Q switch An improved acousto-optic laser Q-switch utilizing a chirped fm pulse in the acousto-optic cell to diffract and focus the input beam into a resonating high-Q mode. When the rf acoustic pulse is not wholly within the cell the beam is diverted to the output... | 08/08/1978 |
| 4057770 | Acousto-optic Q-switch An acousto-optic Q-switch consisting of an acoustic transducer and an acoustic absorber affixed in opposing relationship with a portion of a laser medium having a relatively high figure of merit, M, disposed therebetween, provides an integral structural c... | 11/08/1977 |
| 3994569 | Tl3 PSe4 compound, single crystals, and acousto-optical devices The compound Tl3 PSe4 is disclosed. Non-conducting single crystals of the compound are prepared which have outstanding acousto-optical properties including an exceptionally high acousto-optical figure of merit. The crystals are used ... | 11/30/1976 |
| 3982203 | Method of preventing post pulsing of Q-switched laser An improved optically pumped, acousto-optically Q-switched laser is disclosed, capable of significantly increased output energy. Optical coatings, with their inherent limitations on maximum energy of the output pulse, are completely eliminated. At the ref... | 09/21/1976 |
| 3977770 | Tl3 VS4 Tl3 NbS4 crystals and acousto-optical devices Single crystals of Tl3 VS4 and Tl3 NbS4 are disclosed which have useful acousto-optical properties, including low acoustic velocities and high acousto-optical figure of merit. They are used in acousto-optical de... | 08/31/1976 |
| 3958863 | Tl3 TaS4 and Tl3 TaSe4 crystals and acousto-optical devices Single crystals of Tl3 TaS4 and Tl3 TaSe4 are disclosed which have useful acousto-optical properties, including low acoustic velocities and high acousto-optical figures of merit. They are used in acousto-optical... | 05/25/1976 |
| 3936769 | Acousto-optically Q-switched laser with modulated output A techinque for modulating the output signal of an acousto-optically Q-switched laser is disclosed. The switch is energized with an acoustic wave having a frequency equal to the approximate frequency spacing between longitudinal lasing modes of the laser.... | 02/03/1976 |
