Marion J Soileau

7428095, Sep 23, 2008

Jun 1, 1982

06/385189

Steven C. Seitel - Ridgecrest CA, US
Jerome B. Franck - Ridgecrest CA, US
Marion J. Soileau - Denton TX, US

The United States of America as represented by the Secretary of the Navy - Washington DC

G02B 26/00

359297, 359267

An optical power limiter is designed for use with high gain optical systems by providing intensity reduction by the use of a non-linear fluid. As the intensity of light increases in the fluid, the index of refraction becomes non-linear very rapidly. This results in a plasma being formed within the fluid. Picosecond reaction time is provided. Recovery time of less than a microsecond is required for the system to return to its starting point.

48465615, Jul 11, 1989

Jun 21, 1988

7/210476

Marion J. Soileau - Orlando FL
Eric W. Van Stryland - Orlando FL

The United States of America as represented by the Secretary of the Army - Washington DC

G02B 523
G02F 101
G02F 129

350354

Collimated incident optical radiation which might contain high-intensity or igh-power radiation is focused into the body of a limiter by a first lens formed at one end of the limiter. The body is a cylinder of revolution with an axis along the optical axis between radiation and a sensitive detector. Radiation of normal intensity or power freely passes through the body and is recollimated by a second lens formed at the other end of the limiter from the first lens. The body is made of material which is subject to two-photon absorption such that high-intensity or high-power radiation undergoes absorption and is consequently self-defocused such that it is diverted from the optical path. For visible light, the material may be ZeSe or ZnS; for ultraviolet, copper chloride; for infrared, HgCgTe.