Title:
LASER DEVICE AND PHOTOACOUSTIC MEASUREMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/169452
Kind Code:
A1
Abstract:
[Problem] To provide a laser device in which the oscillation of a Q-switch is proactively used to improve pulsed laser light output, as well as to provide a photoacoustic measurement device provided with said laser device. [Solution] A laser device (1) that emits a pulsed laser light by radiating an excitation light onto a laser medium (51) while a first voltage is applied to a Q-switch (57), then after the radiation of the excitation light, changing the voltage applied to the Q-switch (57) from the first voltage to a second voltage, wherein the timing of the start of application of the first voltage during normal operation is set to a time when the intensity of the pulsed laser light reaches a maximum, said intensity cyclically changing due to the oscillation of the Q-switch (57).
Inventors:
ISHII HIROYASU (JP)
HIROTA KAZUHIRO (JP)
HIROTA KAZUHIRO (JP)
Application Number:
PCT/JP2017/007632
Publication Date:
October 05, 2017
Filing Date:
February 28, 2017
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
A61B8/13; H01S3/115; G01N29/06; G01N29/24; H01S3/00
Foreign References:
| JP2015111660A | 2015-06-18 | |||
| JP2015525003A | 2015-08-27 | |||
| JPH10247755A | 1998-09-14 | |||
| US4375684A | 1983-03-01 | |||
| US3694769A | 1972-09-26 | |||
| JPS458272B1 | 1970-03-24 |
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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