Coherent light generators – Particular beam control device – Modulation
Patent
1990-02-23
1991-05-21
Gonzalez, Frank
Coherent light generators
Particular beam control device
Modulation
372 33, 372105, H01S 3106
Patent
active
050181530
ABSTRACT:
A method and apparatus which corrects the amplutide variation in the output in an electro-optic modulated laser system (10). Birefringence within the electro-optic crystal (25) causes elliptical polarization of the linearly polarized laser light (22) produced by the laser gain medium (16), in turn causing a loss in the laser output (27). The loss owing to the elliptical polarization is corrected by either applying a D.C. bias from voltage source (30) directly to the electro-optic crystal (25) or by inserting a quarter-wave plate (32) within the laser's resonant cavity.
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Hecht and Zajac, Optics, Addison-Wesley Co., Reading MA, 1979 pp. 249, 250 and 265.
Chien Kuei-Ru
Reeder Robin A.
Stovall H. Dean
Denson-Low Wanda K.
Gonzalez Frank
Hughes Aircraft Company
Morse Susan S.
Streeter William J.
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