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:
May. 09, 2017
Filed:
Aug. 05, 2015
Applicant:
Gigaphoton Inc., Tochigi-ken, JP;
Inventors:
Takashi Matsunaga, Tochigi-ken, JP;
Takahito Kumazaki, Tochigi-ken, JP;
Osamu Wakabayashi, Tochigi-ken, JP;
Assignee:
GIGAPHOTON INC., Tochigi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/10 (2006.01); H01S 5/00 (2006.01); H01S 3/08 (2006.01); H01S 3/13 (2006.01); H01S 3/137 (2006.01); H01S 3/225 (2006.01); H01S 3/23 (2006.01);
U.S. Cl.
CPC ...
H01S 3/08004 (2013.01); H01S 3/1305 (2013.01); H01S 3/137 (2013.01); H01S 3/2251 (2013.01); H01S 3/2256 (2013.01); H01S 3/2366 (2013.01);
Abstract
There is provided a method of controlling the wavelength of a laser beam. The method includes measuring an absolute wavelength of the laser beam; calculating a difference between a reference wavelength and the absolute wavelength of the laser beam; and adjusting the reference wavelength of the laser beam based on the difference between the reference wavelength and the absolute wavelength of the laser beam, at an interval shorter than an interval for which the absolute wavelength of the laser beam is measured.