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:
Sep. 13, 2011
Filed:
Jul. 26, 2006
Hiroyuki Furuya, Nara, JP;
Akihiro Morikawa, Osaka, JP;
Kiminori Mizuuchi, Osaka, JP;
Kazuhisa Yamamoto, Osaka, JP;
Shinichi Kadowaki, Hyogo, JP;
Hiroyuki Furuya, Nara, JP;
Akihiro Morikawa, Osaka, JP;
Kiminori Mizuuchi, Osaka, JP;
Kazuhisa Yamamoto, Osaka, JP;
Shinichi Kadowaki, Hyogo, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A wavelength conversion element is provided with a substrate including a nonlinear optical single crystal having a periodically poled structure, wherein a visible light transmittance of the substrate is 85% or higher when ultraviolet light is irradiated to the substrate. Further, a laser light having an average output of 1 W or more is outputted by shortening a wavelength of inputted laser light having a wavelength of 640 nm to 2000 nm. By improving visible light transmission characteristics when the ultraviolet light is irradiated in this way, a breakdown of crystal can be prevented and a stabilization of output characteristics at high output can be realized. As a result, an absorption of green light induced by ultraviolet light can also be suppressed and a saturation of output and the breakdown of crystal can be avoided.