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. 20, 2009
Filed:
May. 15, 2007
Daniel F. Feezell, Santa Barbara, CA (US);
Daniel A. Cohen, Santa Barbara, CA (US);
Robert M. Farrell, Goleta, CA (US);
Masahiro Ishida, Goleta, CA (US);
Shuji Nakamura, Santa Barbara, CA (US);
Daniel F. Feezell, Santa Barbara, CA (US);
Daniel A. Cohen, Santa Barbara, CA (US);
Robert M. Farrell, Goleta, CA (US);
Masahiro Ishida, Goleta, CA (US);
Shuji Nakamura, Santa Barbara, CA (US);
The Regents of the University of California, Oakland, CA (US);
Abstract
A vertical-cavity surface-emitting laser (VCSEL) comprising a low-loss thin metal contact and current spreading layer within the optical cavity that provides for improved ohmic contact and lateral current distribution, a substrate including a plano-concave optical cavity, a (Ga,In,Al)N multiple quantum well (MQW) active region contained within the optical cavity that generates light when injected by an electrical current, and an integrated micromirror fabricated onto the substrate that provides for optical mode control of the light generated by the active region. A relatively simple process is used to fabricate the VCSEL.