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:
Feb. 16, 2010
Filed:
Sep. 06, 2005
Hiroshi Sakai, Hamamatsu, JP;
Hirofumi Kan, Hamamatsu, JP;
Takunori Taira, Okazaki, JP;
National Institutes of Natural Sciences, Tokyo, JP;
Hamamatsu-Photonics K.K., Shizuoka, JP;
Abstract
A laser apparatusincludes: a laser mediumarranged between a pair of reflecting meansA andB of an optical resonatorand adapted to be excited to emit light; a saturable absorberarranged on the optical axis L of the optical resonatorbetween the pair of reflecting means, the transmissivity thereof being adapted to increase with the absorption of emitted lightfrom the laser medium; and an excitation light source unitadapted to output lighthaving a wavelength that excites the laser medium. The saturable absorberis a crystalline body having first to third mutually perpendicular crystallographic axes and is arranged in the optical resonatorin such a manner as to have different transmissivities for emitted light in two mutually perpendicular polarization directions. In this case, a laser oscillation occurs for emitted light in the polarization direction that shows the greater transmissivity, and it is therefore possible to obtain laser beams having a stabilized polarization direction.