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:
Sep. 17, 1985
Filed:
Feb. 23, 1983
Applicant:
Inventors:
Robert C Goodfellow, Brackley, GB;
Malcolm E Harding, Stony Stratford, GB;
Assignee:
Plessey Overseas Limited, Ilford, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 46 ; 357 17 ;
Abstract
In a semi-conductor laser of buried active laser layer type, the laser layer is located between a layer of n-type material and a layer of p-type material, the sides of the active laser layer and at least a portion of the n-type layer and the p-type layer being covered with a plurality of thin layers with a doping sequence such that a large number of p-n junctions are included in the plurality of thin layers.