Stabilization of a single-frequency generation of the injection-seeded pulsed solid-state laser

The article presents the results of developing the single-frequency pulsed Nd : YAG laser system at the 660 nm wavelength with a pulse duration of 50 ns and repetition rate of 1–10 Hz, operating in a Q-switched mode with injection of external radiation. Various schemes of forming a feedback system for controlling the spectral composition of the laser system are considered. It is shown that the method of locking the master oscillator frequency to the mode of the pulsed laser cavity has a number of advantages over the method of stabilizing the cavity length.