Title:
多波長レーザ装置及び光音響計測装置
Document Type and Number:
Japanese Patent JP6964759
Kind Code:
B2
Abstract:
The laser device includes a laser crystal, a resonator including a pair of mirrors between which the laser crystal is interposed, a Q switch that is disposed on an optical path of the resonator and controls a Q value of the resonator, and a Brewster thin-film polarizer that is disposed on the optical path of the resonator and transmits selectively p-polarized light. The thin-film polarizer has wavelength selectivity in which a p-polarized light transmittance at a first wavelength exhibiting a maximum gain of the laser crystal is 5% or more to 25% or less, the p-polarized light transmittance monotonically increases as a wavelength becomes longer than the first wavelength, and a maximum transmittance is exhibited at a third wavelength. The laser device oscillates laser light at a second wavelength that is a wavelength longer than the first wavelength and shorter than or equal to the third wavelength.
More Like This:
Inventors:
Hiroyasu Ishii
Takaa Wada
Takaa Wada
Application Number:
JP2020509699A
Publication Date:
November 10, 2021
Filing Date:
January 17, 2019
Export Citation:
Assignee:
FUJIFILM Corporation
International Classes:
H01S3/115; A61B8/13; G01N29/06; G01N29/24; H01S3/00
Domestic Patent References:
| JP2015111660A | ||||
| JP201389680A |
Attorney, Agent or Firm:
Patent Service Corporation Taiyo International Patent Office