33 W quasi-continuous-wave narrow-band sodium D2a laser by sum-frequency generation in LBO
Chinese Physical Society and IOP Publishing Ltd
We demonstrate an all-solid quasi-continuous-wave (QCW) narrow-band source tunable to sodium D2a line at 589.159 nm. The source is based on sum-frequency mixing between lasers at 1064 nm and 1319 nm in a LBO crystal. The 1064 nm and 1319 nm lasers are produced from two diode side-pumped Nd:YAG master oscillator power amplifier (MOPA) laser systems, respectively. A 33 W output of 589 nm laser is obtained with beam quality factor M2 = 1.25, frequency stability better than ±0.2 GHz and linewidth less than 0.44 GHz. A prototype 589 nm laser system is assembled, and a sodium laser guided star has been successfully observed in the field test.
Peng-Yuan, Wang, Xie Shi-Yong, Bo Yong, Wang Bao-Shan, Zuo Jun-Wei, Wang Zhi-Chao, Shen Yu, Zhang Feng-Feng, Wei Kai, Jin Kai, Xu Yi-Ting, Xu Jia-Lin, Peng Qin-Jun, Jing-Yuan Zhang, Lei Wen-Qiang, Cui Da-Fu, Zhang Yu-Dong, Xu Zu-Yan.
"33 W quasi-continuous-wave narrow-band sodium D2a laser by sum-frequency generation in LBO."
Chinese Physical Society and IOP Publishing Ltd, 23 (9): 1-5.