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:
Dec. 29, 2015
Filed:
Aug. 23, 2013
Sumitomo Electric Industries, Ltd., Osaka, JP;
Shigehiro Nagano, Yokohama, JP;
Motoki Kakui, Yokohama, JP;
Hiroshi Kohda, Yokohama, JP;
Shinobu Tamaoki, Yokohama, JP;
Yasuomi Kaneuchi, Yokohama, JP;
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
Abstract
The present invention relates to a laser light source capable of suppressing variation in propagation state of randomly-polarized laser light. In the laser light source, an isolator including a Faraday rotation crystal having a positive thermooptic constant, and a nonlinear optical crystal having a negative thermooptic constant are arranged in order along a traveling direction of laser light. The nonlinear optical crystal is arranged in a state off normal incidence of incident light so that a propagation axis of light propagating in the crystal is parallel to an optic axis of the crystal.