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:
Jul. 07, 2015
Filed:
Dec. 27, 2012
Applicant:
Pranalytica, Inc., Santa Monica, CA (US);
Inventors:
Richard Maulini, Los Angeles, CA (US);
Arkadiy Lyakh, Santa Monica, CA (US);
Alexei Tsekoun, Los Angeles, CA (US);
C. Kumar N. Patel, Santa Monica, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/20 (2006.01); H01S 5/34 (2006.01); H01S 5/24 (2006.01); H01S 5/30 (2006.01);
U.S. Cl.
CPC ...
H01S 5/3401 (2013.01); H01S 5/24 (2013.01); H01S 5/30 (2013.01);
Abstract
An improved quantum cascade laser, the improvement comprising a longitudinally non-uniform dielectric waveguide. The waveguide includes a longitudinally straight section and a longitudinally tapered section. The length of the tapered section is between 5% and 50% of the total cavity length. The tapered section tapers at a taper angle from the facet width to the ridge width. The taper angle is smaller than the delineation angle of the waveguide.