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. 29, 1992
Filed:
Jul. 24, 1991
Applicant:
Inventors:
Boris S Elman, Newton, MA (US);
Wayne F Sharfin, Lexington, MA (US);
Assignee:
GTE Laboratories Incorporated, Waltham, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ; H01L / ;
U.S. Cl.
CPC ...
372 45 ; 372 43 ; 372 50 ; 437 51 ; 437129 ;
Abstract
A ridge-waveguide laser is fabricated by epitaxially growing a GaAs-based heterostructure, disposing an AlAs etch stop layer on the heterostructure, disposing epitaxial layers on the etch stop layer, and etching the heterostructure to form the laser whereby the etch stop layer prevents further etching into said heterostructure.