Coherent light generators – Particular beam control device
Patent
1986-03-13
1988-12-27
Laroche, Eugene R.
Coherent light generators
Particular beam control device
372 18, 372 20, 372 21, 372 22, 372 31, 372 32, 372 97, 372 99, H01S 310, H01S 3098, H01S 3082, G11C 2900
Patent
active
047946059
ABSTRACT:
A technique in which one or more phase conjugation cells, such as stimulated Brillouin scattering cells, are controlled by use of a seed beam injected into the cells. When a laser beam is focused into a phase conjugation cell, a reflected phase conjugated beam is produced. The seed beam is injected at the same frequency and in the same direction as the expected phase conjugated beam, and is adjusted to control the phase and other characteristics of the phase conjugated beam. In multiple cell arrays, seed beams are employed to ensure phase coherency of multiple beams. For lower energy applications, use of the seed beam allows a phase conjugation cell to be operated with incident beams of lower energy than would be needed without the seed beam.
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Giuliano "Applications of Optical Phase Conjugation", Physics Today, Apr. 1981, pp. 27-35.
Aprahamian Robert
Salvi Theodore C.
Goldstein Sol L.
Heal Noel F.
LaRoche Eugene R.
Shingleton Michael
TRW Inc.
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