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Laser light source unit, control method thereof, photoacoustic image generation apparatus and method
专利权人:
富士フイルム株式会社
发明人:
笠松 直史,入澤 覚,広田 和弘
申请号:
JP2012160425
公开号:
JP5662973B2
申请日:
2012.07.19
申请国别(地区):
JP
年份:
2015
代理人:
摘要:
A pulse laser beam is emitted in a desired wavelength sequence using a laser light source unit. A Q switch and a birefringent filter are inserted into an optical resonator including a pair of mirrors and facing each other with a laser rod interposed therebetween. The birefringent filter changes an oscillation wavelength of the optical resonator in association with rotational displacement. The rotation control unit rotates the birefringent filter at a predetermined rotation speed depending on the number of wavelengths included in the wavelength sequence of the pulse laser beam to be emitted. An emission control unit irradiates the laser rod with excitation light, and then turns on the Q switch at a timing when a rotational-displacement-position of the birefringent filter is set to a position corresponding to the wavelength of the pulse laser beam to be emitted, to cause the pulse laser beam to be emitted.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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