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. 22, 2019
Filed:
Feb. 13, 2015
Kyoto University, Kyoto-shi, Kyoto, JP;
Hamamatsu Photonics K.k., Hamamatsu-shi, Shizuoka, JP;
Kazuyoshi Hirose, Hamamatsu, JP;
Akiyoshi Watanabe, Hamamatsu, JP;
Yoshitaka Kurosaka, Hamamatsu, JP;
Takahiro Sugiyama, Hamamatsu, JP;
Susumu Noda, Kyoto, JP;
Kyoto University, Kyoto-shi, Kyoto, JP;
HAMAMATSU PHOTONICS K.K., Hamamatsu-shi, Shizuoka, JP;
Abstract
A control circuit in this laser equipment drives a drive circuit of a photonic crystal laser element under a predetermined condition. It was found that a wavelength width of a laser beam to be output from the photonic crystal laser element is dependent on a standardized drive current k and a pulse width T, and had a predetermined relationship with these. By meeting this condition, a laser beam with a plurality of wavelengths can be controlled and output.