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:
Aug. 06, 1996
Filed:
Dec. 14, 1993
Applicant:
Inventors:
Benoit Devaud-Pledran, Lannion, FR;
Slimane Loualiche, Lannion, FR;
Assignee:
France Telecom, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 96 ; 372 99 ;
Abstract
A vertical emission laser structure comprising an active region between stacks of layers forming Bragg reflection mirrors respectively of the n-type and of the p-type, wherein: the stacks of layers are formed by different pairs of materials in the n-type mirror and in the p-type mirror; the pair of materials constituting the n-type mirror comprises materials having a conduction band gap that is narrow or even non-existent; and the pair of materials constituting the p-type mirror comprises materials having a valance band gap that is narrow, or even non-existent.