公开(公告)号：JPH0347754B2

公开(公告)日：1991-07-22

申请号：JP28127086

申请日：1986-11-26

Applicant: HAMAMATSU PHOTONICS KK

Inventor： URA TADAHISA ,  SUZUKI HIDEO ,  OOSUMI YASUTSUGU ,  MORITA NOBUHIRO ,  MATSUMOTO OSAMU ,  KOBAYASHI JUJI ,  OOHAYASHI YASUSHI

IPC: H01S3/108 ,  G02F1/39

公开(公告)号：JPS63133687A

公开(公告)日：1988-06-06

申请号：JP28127086

申请日：1986-11-26

Applicant: HAMAMATSU PHOTONICS KK

Inventor： URA TADAHISA ,  SUZUKI HIDEO ,  OSUMI YASUTSUGU ,  MORITA NOBUHIRO ,  MATSUMOTO OSAMU ,  KOBAYASHI YUJI ,  OBAYASHI YASUSHI

IPC: H01S3/108 ,  G02F1/39

Abstract: PURPOSE:To prevent displacement of output laser beam position by changing an angle formed by the optical axis of laser beam and optical axis through formation of curved external surface of window for inputting or outputting laser beam of device including an arc centered to the intersecting point of the optical axis of nonlinear optical crystal and optical axis of laser beam. CONSTITUTION:A nonlinear optical crystal 11 and a case 12 for sealing the crystal 11 are formed integrally and wavelength of laser beam 25a emitted is changed by changing an angle formed by the optical axis 26 of laser beam 25 incident to the non-linear optical crystal 11 and optical axis of the nonlinear optical crystal 11. In this waveform variable laser device, the external circumference of windows 21, 22 for inputting and outputting laser beams 25, 25a of case 12 is formed as the curved surface including the arc centered at the intersecting point of the optical axis of nonlinear optical crystal 11 and optical axis 26 of laser beam 25. The external circumference of windows 21, 22 for inputting and outputting laser beams 25, 25a of the case 12 is formed, for example, in cylindrical having the center axis of the rotating axis 13 of case 12, or formed as the spherical surface centered on the intersecting point of the rotating axis 13 of case 12 and the optical axis 26 of the laser beam 25.