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:
Jun. 05, 2018
Filed:
May. 13, 2015
Applicant:
California Institute of Technology, Pasadena, CA (US);
Inventors:
Ryan M. Briggs, Pasadena, CA (US);
Clifford F. Frez, Arcadia, CA (US);
Siamak Forouhar, Pasadena, CA (US);
Assignee:
California Institute of Technology, Pasadena, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/34 (2006.01); H01S 5/125 (2006.01); H01S 5/22 (2006.01); H01S 5/12 (2006.01); H01S 5/227 (2006.01);
U.S. Cl.
CPC ...
H01S 5/3402 (2013.01); H01S 5/125 (2013.01); H01S 5/1237 (2013.01); H01S 5/22 (2013.01); H01S 5/12 (2013.01); H01S 5/2216 (2013.01); H01S 5/2275 (2013.01);
Abstract
Quantum cascade (QC) lasers and methods of fabricating such QC lasers are provided. The QC lasers incorporate a DFB grating without requiring the use of relying on epitaxial regrowth processes. The DFB gratings are formed as sidewall gratings along the lateral length of the QC active region, or the DFB gratings are formed atop the lateral length of the QC active region, and wherein the top DFB grating is planarized with a polymeric material.