Optical: systems and elements – Optical modulator – Light wave temporal modulation
Patent
1996-03-01
1998-03-17
Moskowitz, Nelson
Optical: systems and elements
Optical modulator
Light wave temporal modulation
359299, H01S 308, G02B 523, G02F 101
Patent
active
057293759
ABSTRACT:
An optical amplification system directs a diffraction-limited signal beam through a series of crossings, at substantially less than 90.degree. crossing angles, with a number of non-diffraction-limited pump beams in a photorefractive medium. The pump beams are e-polarized while the signal beam travels down the crystal medium's c-axis and is polarized in the same plane as the pump beam polarization, resulting in an energy transfer from the pumps to the signal beam while leaving the signal beam diffraction-limited. The photorefractive medium is preferably a series of BaTiO.sub.3 :Rh crystals that are aligned parallel to the angled edge of a wedged-shape prism through which the pump beams are transmitted, with the crystals cut so that their C-axes are parallel to the signal beam.
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Feinberg Jack L.
Klein Marvin B.
MacCormack Stuart
Wechsler Barry
Denson-Low W. K.
Duraiswamy V. D.
Hughes Electronics
Moskowitz Nelson
University of Southern California
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