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| Number | Title | Issue Date |
| 4486884 | Tunable anti-Stokes Raman laser An anti-Stokes Raman laser is disclosed which is tunable over a range of 10-70 cm-1. An alkali halide is used as the lasing medium and a metastable halide population inversion is created with respect to the ground state of the halide by selecti... | 12/04/1984 |
| 4399539 | Auto-ionization pumped anti-Stokes Raman laser An auto-ionization pumped anti-Stokes Raman laser is disclosed which is capable of creating a population inversion between the ground state and a metastable state of an ionic lasing material. The lasing material is first pumped above a metastable energy l... | 08/16/1983 |
| 4394623 | Ring cavity for a raman capillary waveguide amplifier A regenerative ring amplifier and regenerative ring oscillator which function to feed back a portion of the Stokes signal to complete the ring cavity. The ring cavity configuration allows the CO2 laser pump signal and Stokes signal to copropaga... | 07/19/1983 |
| 4389617 | Combination ring cavity and backward Raman waveguide amplifier A combination regenerative ring and backward Raman waveguide amplifier and a combination regenerative ring oscillator and backward Raman waveguide amplifier which produce Raman amplification, pulse compression, and efficient energy extraction from the CO | 06/21/1983 |
| 4361770 | Technique for synchronization of raman scattered radiation A device is disclosed for producing a pair of synchronized intense 16 micron pulses in which stimulated rotational Raman scattering together with four wave mixing and pulse compression takes place in parahydrogen on an off-axis path between a pair of sphe... | 11/30/1982 |
| 4327337 | Intracavity raman frequency conversion in a high power laser A gaseous Raman conversion medium is placed inside a laser resonant cavity to generate tunable laser radiation in the visible, near infrared and far infrared spectral ranges with an improved conversion efficiency and a higher power output. The combination... | 04/27/1982 |
| 4318057 | Optically pumped isotopic ammonia laser system An optically pumped isotopic ammonia laser system which is capable of producing a plurality of frequencies in the middle infrared spectral region. Two optical pumping mechanisms are disclosed, i.e., pumping on R(J) and lasing on P(J) in response to enhanc... | 03/02/1982 |
| 4315224 | Laser stimulated Raman molecular beam time and frequency standard A laser stimulated Raman molecular beam time and frequency standard utilizing a first electromagnetic beam at a first preselected frequency to pump a molecular beam at a first preselected point along the beam to state select the beam. A second electromagn... | 02/09/1982 |
| 4280109 | Efficient frequency converter utilizing higher order Stokes-Raman scattering A device for translating the frequency of the energy contained in a laser beam. Higher order Raman scattering is utilized to convert the energy in a laser beam into a collimated beam of radiation at a frequency removed from that of the original beam by an... | 07/21/1981 |
| 4277760 | Crossed-beam phase-matched coherent anti-stokes raman spectroscopy A method for generating coherent anti-Stokes Raman radiation having high spatial resolution is disclosed. Three input beams are focused into an interaction zone where three wave mixing occurs to generate a coherent anti-Stokes Raman beam. The angular sepa... | 07/07/1981 |
| 4264877 | Apparatus for producing tunable intense coherent radiation in the vicinity 628 cm.-1 Apparatus for producing tunable intense coherent radiation at approximately 628 cm.-1 with a line width less than 0.1 cm.-1. The apparatus includes an optical cavity containing a vapor cell and pumping means including at least one op... | 04/28/1981 |
| 4229708 | X-ray laser This invention is directed towards a scalable X-ray laser comprising means for providing an active medium of lithium-like atoms or ions, means for producing in the active medium a population of low density ions in an excited intermediate metastable state ... | 10/21/1980 |
| 4194170 | Shifting of infrared radiation using rotational raman resonances in diatomic molecular gases A device for shifting the frequency of infrared radiation from a CO2 laser by stimulated Raman scattering in either H2 or D2. The device of the preferred embodiment comprises an H2 Raman laser having dichroic mi... | 03/18/1980 |
| 4165469 | Apparatus and method for producing visible coherent light at a plurality of wavelengths A pulsed solid state tunable laser comprises a Q-switched pump laser at kilohertz (kHz) pulse repetition frequencies and a non-centrosymmetric Raman crystal, such as lithium iodate (LiIO3), through which the pump beam is directed at an angle θ... | 08/21/1979 |
| 4151486 | Tunable alkali metallic vapor laser A tunable alkali metallic vapor laser system is disclosed. Stimulated Raman scattering (SRS) in a low pressure atomic alkali metallic vapor of potassium or cesium is utilized wherein the atomic vapor is provided and then primed to populate an intermediate... | 04/24/1979 |
| 4136318 | Spin-flip Raman laser with increased tuning range and increased efficiency Disclosed are cascaded spin-flip Raman lasers involving alloy semiconductors such as mercury cadmium telluride with different energy gaps or with an energy gap gradient to provide for a relatively large change in frequency for a small change in field and ... | 01/23/1979 |
| 4063103 | Electron beam exposure apparatus A radiant beam exposure apparatus forms a desired pattern on a workpiece disposed on a carriage movable in both directions X and Y which intersect at a right angle. The distance over which the carriage moves is measured by a laser interferometer. In respo... | 12/13/1977 |
| 4063106 | Optical fiber Raman oscillator A tunable radiation source employing the stimulated Raman-scattering process is disclosed. The source generates several orders of Stokes radiation in an optical-fiber oscillator cavity, which Stokes radiation may be independently tuned by incorporating se... | 12/13/1977 |
| 4048516 | Laser apparatus for producing stimulated Raman scattering Stimulated Raman scattering (SRS) at kHz pulse repetition rates is substantially improved with a laser configuration in which the Raman oscillator mirrors within the laser resonator are removed and the laser mirrors are used for both the laser and the Ram... | 09/13/1977 |
| 4039851 | Time dispersion tuned Raman oscillator There is disclosed a time-dispersion tuned Raman oscillator which makes use of the frequency-dependent transit time of Stokes radiation through a long optical fiber. Time-dispersion tuning is effected by synchronizing Stokes radiation of the desired frequ... | 08/02/1977 |
| 4023117 | Stimulated raman scattering resonator A stimulated Raman scattering resonator which generates stimulated Raman ttering within an optical resonator and provides regeneration and unidirectional emission of radiation. A focusing mirror is provided for the pumping radiation and is combined with ... | 05/10/1977 |
