Optical power limiter utilizing nonlinear refraction

Details Optical power limiter utilizing nonlinear refraction Optical power limiter utilizing nonlinear refraction

1988-11-01

1999-11-16

Moskowitz, Nelson

Optical: systems and elements

Absorption filter

Superimposed or series

359738, 372 21, G02B 632

Patent

active

059868287

ABSTRACT:
A power limiter is provided consisting of two cells of optically transparent material having a low index of refraction, but a large third order susceptibility to electric polarization. The input cell has a positive susceptibility which self-focuses intense radiation beams (i.e., laser beams) and the output cell has a negative susceptibility which scatters the even more intense self-focused beam by self-defocussing.

REFERENCES:
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patent: 4093353 (1978-06-01), Lang
patent: 4114985 (1978-09-01), Friedman
patent: 4549788 (1985-10-01), Chenia
patent: 4819239 (1989-04-01), Sharp et al.
Lehmberg, R. H. ; "A System for Compensating Self Fousing . . . Lasers"; S AD-D003 162/5, 10 pages; Aug. 3, 1976.
Bertsev et al; "Self focusing and Self-Defocusing . . . Gases"; Opt. Spectrosc., vol. 51, #2, pp. 178-182, Aug. 1981.

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