George Ian Stegeman

47657057, Aug 23, 1988

Mar 11, 1983

6/474222

Robert J. Seymour - Wellesley MA
George I. Stegeman - Tucson AZ

GTE Laboratories Incorporated - Waltham MA

G02B 626
G02B 518
G02B 634

350 9615

Devices for efficiently coupling electromagnetic radiation in the far infrared and sub-millimeter microwave regions of the electromagnetic spectrum to surface electromagnetic waves comprise a material of negative dielectric constant having a grating contoured surface overcoated with a transparent organopolymeric material. The efficiency of coupling between the free radiation and the surface electromagnetic waves can be optimized by adjusting the thickness of the overcoating layer.

56595611, Aug 19, 1997

Jun 6, 1995

8/470116

William E. Torruellas - Orlando FL
George I. Stegeman - Maitland FL
Lluis Torner - Berga, ES

University of Central Florida - Orlando FL

H01S 310

372 22

This invention encompasses generating electromagnetic solitary waves in two-transverse spatial dimensions. These wave beams propagate without diffraction and are equivalent to the normal modes of propagation of a nonlinear system governed by second order optical nonlinearities. The wave beams can be generated using optical techniques and will impact a wide variety of geometries and operating conditions whenever second order nonlinear optical processes are implemented for harmonic and parametric optical conversion. A preferred embodiment covers the generation of solitary waves from nonlinear materials such as KTiOPO. sub. 4 (KTP) crystals. Other types of nonlinear optical device crystals can also be used such as KH. sub. 2 PO. sub. 4 (KDP), (NH. sub. 2). sub. 2 CO(Urea), LiNbO. sub. 3, KNbO. sub.

45654220, Jan 21, 1986

Nov 30, 1983

6/556862

Robert J. Seymour - Wellesley Hills MA
George I. Stegeman - Tucson AZ

GTE Laboratories Incorporated - Waltham MA

G02B 504

350 9619

A device for efficiently coupling electromagnetic radiation in the far-infrared and submillimeter spectral regions to surface plasmon waves comprises a prism constructed of a dielectric material, a first layer integrally formed on one face of the prism having an index of refraction which is less than the index of refraction of the prism, and a second overcoat layer formed integrally on the first layer and having an index of refraction which is greater than the index of refraction of the first layer.