Infrared and Laser Engineering, Volume. 47, Issue 1, 105003(2018)
Pulse LD pumped kilohertz 1.57 μm solid-state laser
The eye-safe kilohertz repetition rate solid-state laser was developed by using the OPO of unstable resonator. Using pulse LD side-pumping Nd:YAG laser crystal and electro-optical Q-switched techniques, the laser achieved high beam quality of 1.064 μm fundamental frequency light. The II type noncritical phase-matching KTP crystal was adopted in optical parametric oscillation. In order to get high beam quality, the OPO cavity made use of plane-convex unstable resonator structure. The laser system could operate stably at the wavelength of kilohertz repetition rate 1.57 μm. When the pumping current of LD was 125 A and the electro-optical Q-switched repetition rate was 1 kHz, the maximum average output power of 1.57 μm laser was 4.67 W and the pulse width of the output laser was 4.3 ns, the power instability of 1.57 μm was 3%. The laser pumping threshold was about 45 A.
Get Citation
Copy Citation Text
Dai Qin, Cui Jianfeng, Li Yeqiu, Zhang Shanchun, Li Man, Wu Rina, Yao Jun. Pulse LD pumped kilohertz 1.57 μm solid-state laser[J]. Infrared and Laser Engineering, 2018, 47(1): 105003
Category: 激光器技术
Received: Jun. 5, 2017
Accepted: Aug. 3, 2017
Published Online: Jan. 30, 2018
The Author Email: Qin Dai (daiqin2003@126.com)