Chinese Optics Letters, 2016, 14 (7): 071401, Published Online: Aug. 3, 2018
Stable single-mode operation of injection-seeded Q -switched Nd:YAG laser by sine voltage modulation
Abstract
Based on the modified ramp and fire technique, a novel injection seeding approach with real-time resonance tracking is successfully demonstrated in a single-frequency Nd:YAG pulsed laser. Appling a high-frequency sinusoidal modulation voltage to one piezo actuator and an adjustable DC voltage to another piezo actuator for active feedback, single-mode laser output with high-frequency stability is obtained, and the effect of the piezo hysteresis on the frequency stability can be eliminated for a laser diode pumped Q -switched Nd:YAG laser at a repetition rate of 400 Hz.
Yongfei Gao, Junxuan Zhang, Huaguo Zang, Xiaolei Zhu, Yingjie Yu, Weibiao Chen. Stable single-mode operation of injection-seeded