A 3-kHz Er:YAG single-frequency laser with a ‘triple-reflection’ configuration on a piezoelectric actuator

Huang Shuai^{1, 2}, Wang Qing^{1, 2, †}, Zhang Meng^{1, 2}, Chen Chaoyong^{1, 2}, Wang Kaixin^{1, 2}, Gao Mingwei^{1, 2}, Gao Chunqing^{1, 2}

(a) The pulse temporal profiles of single-frequency pulse at a PRF of 3 kHz. (b) The corresponding spectral characteristics of the single-frequency pulses. (c) The heterodyne beating signal at 3 kHz.