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) Frequency detuning versus light intensity of seed laser with different cavity lengths. (b) Frequency detuning versus light intensity of seed laser at different output coupler transmissions. (c) The detected resonant signal at 3 kHz when scanning the length of the slave cavity.