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:
Apr. 30, 1996
Filed:
Apr. 05, 1995
Theodoor C Damen, Colts Neck, NJ (US);
AT&T Corp., Murray Hill, NJ (US);
Abstract
In accordance with the present invention, a surface emitting laser includes a substrate, a first distributed feedback mirror formed on the substrate, and an active gain medium formed on the first mirror. The active gain medium includes at least one active, optically emitting layer and one barrier layer. A second distributed feedback mirror is formed on the active gain medium. The first and second mirrors define a resonant cavity for supporting a standing wave optical field at a designed wavelength of operation The first and second mirrors have first and second reflective bandwidths that respectively include first and second transmissive bandwidths for receiving optical pumping energy. The first and second reflective bandwidths are shifted in wavelength relative to one another so that the first and second transmissive bandwidths are located at distinct wavelengths.