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:
Nov. 30, 2010
Filed:
Dec. 15, 2005
Christopher L. Chua, San Jose, CA (US);
Michael A. Kneissl, Berlin, DE;
Noble M. Johnson, Menlo Park, CA (US);
Peter Kiesel, Palo Alto, CA (US);
Christopher L. Chua, San Jose, CA (US);
Michael A. Kneissl, Berlin, DE;
Noble M. Johnson, Menlo Park, CA (US);
Peter Kiesel, Palo Alto, CA (US);
Palo Alto Research Center Incorporated, Palo Alto, CA (US);
Abstract
A method of avoiding device failure caused by facet heating is described. The method is particularly applicable to a semiconductor laser. In the method, a semiconductor laser facet including GaAsN is hydrogenated such that the bandgap within the facet is greater than the bandgap in the active region of the InGaAsN laser. The increased bandgap reduces absorption of light in the facet and the associated heating that results.