发明名称 |
LASER LIGHT SOURCE UNIT, CONTROL METHOD FOR SAME, AND DEVICE AND METHOD FOR GENERATING PHOTOACOUSTIC IMAGE |
摘要 |
Using a laser source unit, a plurality of wavelengths are switched at a high speed without increasing a rotation speed of a birefringent-filter. A Q switch and a birefringent filter are inserted into an optical resonator including a pair of mirrors 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. Driving means reciprocatively rotates the birefringent-filter in a predetermined range including a discontinuous point of change characteristics of a transmission wavelength for the rotational displacement. An emission control unit irradiates the laser rod with excitation light from a flash lamp, 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. |
申请公布号 |
EP2744053(A1) |
申请公布日期 |
2014.06.18 |
申请号 |
EP20120820110 |
申请日期 |
2012.07.26 |
申请人 |
FUJIFILM CORPORATION |
发明人 |
IRISAWA KAKU;KASAMATSU TADASHI |
分类号 |
H01S3/106;A61B5/00;A61B5/145;A61B5/1455;A61B8/00;G01N21/17;G01N29/00;G01N29/11;G01N29/24;G01N29/46;H01S3/06;H01S3/08;H01S3/092;H01S3/11;H01S3/16 |
主分类号 |
H01S3/106 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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