| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser apparatus capable of efficiently oscillating laser beams with reduced energy losses. SOLUTION: A laser apparatus treats a lesion by guiding and applying a treatment laser beam to the lesion. In this case, the laser apparatus includes a laser beam oscillation means 1 for oscillating the pulsed laser beam by imparting excitation light from an excitation light source to a laser medium, a discharge capacitor for supplying driving energy to the excitation light source, a switching element connected in series with a discharge circuit between the discharge capacitor and the excitation light source to turn the discharge circuit on and off, and a command means for issuing commands to turn the switching element on and off so that the desired pulsed laser beams can be obtained from the laser oscillation means 1.
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