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:
Mar. 26, 2019
Filed:
Apr. 11, 2016
Fujifilm Corporation, Tokyo, JP;
Hiroyasu Ishii, Ashigarakami-gun, JP;
Takatsugu Wada, Ashigarakami-gun, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
Disclosed are a laser device which uses alexandrite crystal and is capable of suppressing abnormal oscillation even if the size thereof is reduced and suppressing damage to an AR coating on a Q switch or alexandrite crystal, and a photoacoustic measurement device. A laser rodincludes alexandrite crystal. A flash lampirradiates the laser rodwith excitation light. A resonator includes a pair of mirrorsandwith the laser rodsandwiched therebetween. A Q switchis inserted into the optical path of the resonator and controls the Q value of the resonator. A polarizeris inserted into the resonator and is a non-coated Brewster polarizer which selectively transmits light in a predetermined polarization direction among light emitted from the laser rod.