Patent ID: 8867123
Filing Date: 2014-10-21
Classification: H01S

Abstract:
1. A high-power pulse light generator comprising: a master clock generator generating a master clock signal; a master oscillator generating oscillated pulse light in synchronization with the master clock signal; an optical amplifier amplifying the oscillated pulse light output from the master oscillator and outputting high-power pulsed light; a pumping semiconductor laser generating pumping pulse light used for exciting the optical amplifier; a driving unit driving the pumping semiconductor laser by use of a pulsed driving current in synchronization with the master clock signal; and a control unit controlling the driving unit so that the driving current to be supplied to the pumping semiconductor laser becomes lower than or equal to a set value at which the pumping semiconductor laser is not in a laser oscillation state when returning light from an irradiated body with the high-power pulsed light reaches the pumping semiconductor laser connected to the optical amplifier, the control unit determining a timing of the control in accordance with an optical path length between the irradiated body and the pumping semiconductor laser.