High-power QCW microsecond-pulse solid-state sodium beacon laser with spiking suppression and D2b re-pumping

被引：43

作者：

Bian, Qi ^{[1
,2
]}

Bo, Yong ^{[1
]}

Zuo, Jun-wei ^{[1
]}

Guo, Chuan ^{[1
,2
]}

Xu, Chang ^{[1
]}

Tu, Wei ^{[1
]}

Shen, Yu ^{[1
]}

Zong, Nan ^{[1
]}

Yuan, Lei ^{[1
]}

Gao, Hong-wei ^{[1
]}

Peng, Qin-jun ^{[1
]}

Chen, Hong-bin ^{[1
]}

Feng, Lu ^{[3
]}

Jin, Kai ^{[4
]}

Wei, Kai ^{[4
]}

Cui, Da-fu ^{[1
]}

Xue, Sui-jian ^{[3
]}

Zhang, Yu-dong ^{[4
]}

Xu, Zu-yan ^{[1
]}

机构：

[1] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100190, Peoples R China

[3] Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China

[4] Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China

来源：

OPTICS LETTERS | 2016年 / 41卷 / 08期

基金：

中国国家自然科学基金;

关键词：

SUM-FREQUENCY GENERATION; RESONANCE RADIATION; GUIDE STARS;

D O I：

10.1364/OL.41.001732

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A 65 W quasi-continuous-wave microsecond-pulse solid-state sodium beacon laser tuned to the sodium D-2a line has been developed with a linewidth of 0.3 GHz, beam quality of M-2 = 1.38, and pulse width of 120 mu s at a repetition rate of 500 Hz by sum-frequency mixing 1319 and 1064 nm diode-pumped Nd:YAG master-oscillator power-amplifier systems. The laser wavelength stability is less than +/- 0.15 GHz through feedback controlling. The laser spiking due to relaxation oscillations is suppressed by inserting frequency doublers in both 1319 and 1064 nm oscillators. Sodium D-2b re-pumping is accomplished by tuning the frequency of the electro-optic modulator with the right D-2a -D-2b offset. A bright sodium laser guide star with a photon return of 1820 photons/cm(2)/s was achieved with the laser system when a 32 W circular polarized beam was projected to the sky during our field test at the Xinglong Observatory. (C) 2016 Optical Society of America

引用

页码：1732 / 1735

页数：4

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