| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser oscillation apparatus capable of obtaining a small physical size, obtaining high output laser beams through a plurality of steps of wavelength conversion at high conversion efficiency, and properly taking out the laser beams obtained by wavelength conversion at each step and utilizing them. SOLUTION: The laser oscillation apparatus includes: a first laser resonator that generates 1μm-wavelength band laser beams by performing pulse oscillation using a Q switch 23 after exciting a YAG crystal 22 by incident excitation light which has been output by a laser diode and has penetrated a mirror 11; a first wavelength conversion resonator that converts the 1μm-wavelength band laser beams to first 2μm-wavelength band laser beams and second 2μm-wavelength band laser beams both of which are different in wavelength by means of a wavelength conversion crystal 42 disposed in the first laser resonator; a second wavelength conversion resonator that converts the first 2μm-wavelength band laser beams to 3μm-wavelength band laser beams and 4μm-wavelength band laser beams both of which are different in wavelength by means of a wavelength conversion crystal 102 disposed in the first wavelength conversion resonator and outputs them; and a second laser resonator that resonates and outputs the second 2μm-wavelength band laser beams. COPYRIGHT: (C)2011,JPO&INPIT |
