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. 23, 1996
Filed:
Feb. 03, 1994
Applicant:
Inventors:
Leon Goldstein, Chaville, FR;
Dominique Bonnevie, Leuville sur Orge, FR;
Assignee:
Alcatel N.V., Amsterdam, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
437129 ; 148D / ;
Abstract
In the method, a doped semiconductor coating is to be deposited on a disturbed surface (S) of a semiconductor base (9) doped with a dopant having the same conductivity type as the coating. According to the invention, prior to depositing a main layer (28) of the coating (10), a superdoped layer (24) is deposited, which superdoped layer has a dopant concentration that is greater than twice the mean concentration of the coating. The invention applies in particular to manufacturing a semiconductor laser for an optical fiber telecommunications system.