Optical device with surface plasmons

Details Optical device with surface plasmons Optical device with surface plasmons

1983-08-08

1986-04-22

Sikes, William L.

350 9612, 35016224, G02B 634

Patent

active

045838186

ABSTRACT:
An optical device used as an optical switch or bistable device, with surface plasmons, is comprised of a semiconductor base material forming a non-linear dielectric layer along with a metal layer, with an interface between the metal and semiconductor layers including a submicron grating. The device is optically excited from a light source of given intensity. In accordance with the invention, dispersion relation of surface plasmons may be changed by varying the intensity of an input laser so as to provide bistable or hysteresis effect switching. The concepts of the invention may be implemented in either an unadorned device as set forth, or may be fabricated in an optical waveguide.

REFERENCES:
patent: 3796999 (1974-03-01), Kahn
patent: 3942048 (1976-03-01), Laude et al.
patent: 4329016 (1982-05-01), Chen
"Integrated Optical Coupler" by Galeener et al., Xerox Disclosure Journal, vol. #4, No. 3, May/Jun. 1979.
"Measurement of Third Order Nonlinear Susceptibilities by Surface Plasmons" by Chen et al., Appl. Phys. Lett. 41(4), Aug. 15, 1982.
"Optical Bistability with Surface Plasmons" by Wysin et al., Optical Society of America, Jan. 1981, Optical Letters.
"Optical Constants of the Noble Metals" by Johnson et al., Physical Review B, vol. 6, No. 12, Dec. 15, 1972.
Theory of Hysteresis Reflection and Refraction of Light by a Boundary of a Nonlinear Medium, by Kaplan, Sov. Phys. JEPT 45(5), May 1977.

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