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. 03, 1995
Filed:
Aug. 31, 1993
Applicant:
Inventors:
James D Chadi, Princeton, NJ (US);
Tohru Zuzuki, Tsukuba, JP;
Assignees:
NEC Research Institute, Inc., Princeton, NJ (US);
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 45 ; 372 43 ;
Abstract
An injection laser for operation in the yellow to violet portion of optical spectrum utilizes an indium phosphide substrate on which are lattice matched three successive layers each of the form (MgSe).sub.x (ZnSeTe).sub.1-x, where x has a positive value for each layer up to 1 in the first and third layers but in the second layer has a value less than that of either the first or third layer and the first and third layers are doped to be of opposite conductivity type.