Patent
1983-09-29
1988-10-11
Punter, William H.
G02F 1015
Patent
active
047766778
ABSTRACT:
A nonlinear optical medium wherein the optical index of refraction is a function of the intensity of light irradiating the medium, is employed in various devices to affect at least a portion of an incoming light beam by refracting or reflecting that portion of the light and thereby reduce the amount of light falling on an object. The nonlinear optical medium is employed in a resonator optical bistable device, in a self-bending approach and in a self-defocusing approach to provide the protective function. The spatial profile of light intensity of the incoming light can be shaped prior to the incoming light irradiating the nonlinear medium or the nonlinear medium itself can be shaped to provide the path altering function. A laser hardened device with ultra fast switching time, a large dynamic range and passive operation is a preferred application of the present invention.
REFERENCES:
patent: 2213307 (1940-09-01), Elliott
patent: 3062103 (1962-11-01), Bolz
patent: 3395961 (1968-08-01), Ready
patent: 3495893 (1970-02-01), Geusic et al.
patent: 3519329 (1970-07-01), Buhrer et al.
patent: 3578848 (1971-05-01), Austin
patent: 3623795 (1971-11-01), Taylor et al.
patent: 3625594 (1971-12-01), Lanza
patent: 3655266 (1972-04-01), Buchan
patent: 3790252 (1974-02-01), Pao
patent: 3792916 (1974-02-01), Sarna
patent: 4035527 (1977-07-01), Deeg
patent: 4410239 (1983-10-01), Kaplan et al.
patent: 4464021 (1984-08-01), Brown et al.
Felber et al, "Theory of Nonresonant Multistable Optical Devices", App. Phys. Letts., 6-15-76, pp. 731-733.
Harris, T. J. "Light Beam Deflection", IBM Tech. Disc. Bull, 7-1963, pp. 101-102.
Smith et al, "Bistable Optical Devices Promise Subpisecond Switching", IEEE Spectrum, 6-1981, pp. 26-31.
Liu et al, "Optical Beam Deflection by Pulsed Temperature Gradients in Bulk GaAs", Proc. IEEE, 5-1965, pp. 522-523.
Gibbs et al, "Room-Temperature Excitonic Optical Bistability in a GaAs-GaAlAs Superlattice Etalon", App. Phys. Letts., 8-1-82, pp. 221-222.
Jain Anil K.
Park Yong K.
Honeywell Inc.
Punter William H.
Shudy Jr. John G.
Udseth William T.
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