| 摘要 |
An aspect of the present invention provides a laser oscillation apparatus in which a control circuit can be simplified to variably control a Q switch pulse width with low cost and a controlling method thereof. A laser oscillation apparatus according to an aspect of the present invention includes a laser oscillator head, a Q switch pulse width setting circuit, an LD current control circuit, an LD driver, an RF amplitude control circuit, and an RF driver. The laser oscillator head includes an internal AOQ-SW element, and an excitation LD. The LD current control circuit and the LD driver controls a current applied to excitation LD such that the current becomes not more than a laser oscillation threshold in synchronization with timing when an optical resonator of the laser oscillator head oscillates one-time or plural-time Q switch pulse.
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