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:
Dec. 15, 1992
Filed:
Aug. 06, 1991
Applicant:
Inventors:
Mitra Dutta, Matawan, NJ (US);
Hongen Shen, Howell, NJ (US);
Assignee:
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
356432 ; 356 44 ;
Abstract
A sweeping photoreflectance spectroscopy technique and apparatus is disclosed. This technique and apparatus enable the determination of the band structure of semi conductors and other materials at low temperatures by the mechanism of modulating the photoreflectance signal in a predetermined manner thereby enabling its detection in the presence of a much larger, but continuous, undesirable photoluminescence signal.