The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 10, 1995
Filed:
Nov. 19, 1993
Arthur Ballato, Oceanport, NJ (US);
John A Kosinski, Wall Township, Monmouth County, NJ (US);
Mitra Dutta, Matawan, NJ (US);
Hongen Shen, Howell, NJ (US);
Yicheng Lu, Highland Park, NJ (US);
Jagadeesh Pamulapati, Eatontown, NJ (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
The present invention is a spatial light modulator which uses an uniaxially trained multiple quantum well (MQW) structure with an anisotropic absorption to rotate the polarization of light normal to the MQW structure. The anisotropy which produces this rotation is the result of a thermally induced in-plane anisotropic strain. The MQW light modulator based on this process has a high contrast ratio of 7000:1 and increased speed as compared to other similar modulators.