公开(公告)号：US20140148682A1

公开(公告)日：2014-05-29

申请号：US14167808

申请日：2014-01-29

Applicant: FUJIFILM Corporation

Inventor： Kazuhiro HIROTA ,  Tadashi KASAMATSU

IPC: A61B5/00

CPC classification number: A61B5/0095 ,  A61B5/14542 ,  A61B8/0891 ,  A61B8/13 ,  A61B8/463 ,  A61B8/5207 ,  A61B8/5261 ,  A61B8/54 ,  H01S3/08027 ,  H01S3/092 ,  H01S3/106 ,  H01S3/11

Abstract: Using a laser source unit, pulse laser beams having a plurality of wavelengths is switched and emitted. A Q switch is inserted into an optical resonator including a pair of mirrors which face each other with a laser rod interposed therebetween. A wavelength selection unit includes a plurality of band pass filters having different transmission wavelengths, and selectively inserts the plurality of band pass filters into a light path of the optical resonator. A trigger control circuit controls driving unit that drives the wavelength selection unit so that the band pass filters inserted into the light path of the optical resonator are switched at a predetermined switching speed. In addition, the trigger control circuit causes the laser rod to be irradiated with excitation light from a flash lamp, and then turns on the Q switch at a timing when the wavelength selection unit inserts the band pass filter.

Abstract translation: 使用激光源单元，切换并发射具有多个波长的脉冲激光束。 将Q开关插入到包括一对反射镜的光学谐振器中，所述反射镜彼此面对，激光棒彼此相对。 波长选择单元包括具有不同透射波长的多个带通滤波器，并且将多个带通滤波器选择性地插入到光谐振器的光路中。 触发控制电路控制驱动波长选择单元的驱动单元，使得插入到光谐振器的光路中的带通滤波器以预定的切换速度被切换。 此外，触发控制电路使得激光棒被来自闪光灯的激发光照射，然后在波长选择单元插入带通滤光器的时刻接通Q开关。