Coherent light generators – Particular resonant cavity – Specified cavity component
Patent
1989-10-10
1991-08-06
Gonzalez, Frank
Coherent light generators
Particular resonant cavity
Specified cavity component
359300, 359530, 359529, 372 21, H01S 308
Patent
active
050383590
ABSTRACT:
An optical input beam is transmitted through a non-linear medium capable of two-wave mixing gain by photorefractive, Brillouin, Raman, or other non-linear optical mechanism. A psuedo-conjugator retroreflects the input beam which has passed through the medium, back into the medium. The retroreflected beam acts as a seed, which lowers the threshold for producing a self-pumped conjugate reflected beam in the medium by stimulated scattering. The pseudo-conjugator may be a flat array of retroreflecting elements in the form of spheres or corner reflectors. A mosaic pattern of conjugating elements can be phase-locked to yield larger apertures and/or energy scaling, in a master-oscillator, power-amplifier (MOPA), or a four-wave mixer (FWM) configuration. The retroreflected beam can be modulated to temporally encode information onto the conjugate beam, and/or polarized to increase the system efficiency. The input and self-pumped conjugate reflected beams can be used as reference or pump beams in a FWM configuration.
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Mullen Ruth A.
Pepper David M.
Denson-Low W. K.
Duraiswamy V. D.
Gonzalez Frank
Hansen Galen J.
Hughes Aircraft Company
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