| 摘要 |
PROBLEM TO BE SOLVED: To simplify the configuration of an optical resonator, and suppress the deterioration of a Q switch even when the standby time in which light emission is not performed is long.SOLUTION: A flash lamp 32 excites a laser rod 31. A Q switch 35 for changing the loss of an optical resonator in accordance with applied voltage is inserted to an optical path of a pair of mirrors 33, 34 constituting the optical resonator. An optical path breaker 39 is arranged on the optical path of laser emission light. In the first operation mode for performing laser emission, pulse laser light is emitted by changing the applied voltage to the Q switch 35 from high voltage to, for example, 0 V after the laser rod 31 is excited by the flash lamp 32 in the state where the optical path breaker 39 is opened. In the second operation mode for interrupting the laser emission to stand by, the applied voltage to the Q switch 35 is changed to, for example, 0 V in the state where the optical path breaker 39 is closed. |
