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:
Oct. 29, 2019
Filed:
Apr. 04, 2017
Applicant:
Nlight, Inc., Vancouver, WA (US);
Inventors:
Zhigang Chen, Portland, OR (US);
Manoj Kanskar, Portland, OR (US);
Assignee:
nLIGHT, Inc., Vancouver, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/30 (2006.01); H01S 5/40 (2006.01); G02B 27/10 (2006.01); G02B 27/14 (2006.01); H01S 5/026 (2006.01); H01S 5/00 (2006.01); H01S 5/022 (2006.01);
U.S. Cl.
CPC ...
H01S 5/3095 (2013.01); G02B 27/106 (2013.01); G02B 27/145 (2013.01); H01S 5/4043 (2013.01); H01S 5/005 (2013.01); H01S 5/026 (2013.01); H01S 5/02252 (2013.01); H01S 5/02284 (2013.01); H01S 5/405 (2013.01); H01S 5/4012 (2013.01); H01S 5/4018 (2013.01); H01S 5/4068 (2013.01); H01S 5/4081 (2013.01);
Abstract
Laser diodes formed on a common substrate with layers of suitable thickness and refractive indices produce output beams that are coherently coupled. A phase mask can be situated to produce phase differences in one or more of the output beams to produce a common wavefront phase. The phase-corrected beams propagate with reduced angular divergence than conventional lasers that are not coherently coupled, and the coherently coupled laser diodes can provide higher beam brightness, enhanced beam parameter product, and superior power coupled into doped fibers in fiber lasers.