CPC H01S 3/113 (2013.01) [H01S 3/0941 (2013.01); H01S 3/102 (2013.01); H01S 5/0427 (2013.01); B23K 26/082 (2015.10); H01S 3/094076 (2013.01); H01S 3/1305 (2013.01); H01S 3/1307 (2013.01)] | 20 Claims |
1. A passive Q switching laser device, comprising:
a passive Q switching laser that includes an excitation light source that emits excitation light, and a resonator that is excited by the excitation light to emit oscillation light;
a signal source that outputs a drive signal for driving the excitation light source;
a modulation unit that modulates, on a basis of emission timing at which the oscillation light has been emitted from the passive Q switching laser, the drive signal output from the signal source; and
a power source unit that drives, on a basis of the drive signal modulated by the modulation unit, the excitation light source to emit the excitation light,
wherein the drive signal is a pulse signal,
wherein the power source unit causes the excitation light source to emit the excitation light while the drive signal modulated by the modulation unit is at an on-level, and
wherein the modulation unit modulates a time period of the on-level of the pulse signal output from the signal source.
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