Share Email Print
cover

Proceedings Paper • new

Quasi-continuous-wave long-pulsed, all-solid-state Nd:YAG modeless laser
Author(s): Xiaoming Chen; Lei Zhang; Xiafei Xu; Yanhua Lu; Huaijin Ren
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We demonstrate the quasi-continuous-wave long-pulsed operation of a compact all-solid-state modeless laser based on intracavity frequency-shifted feedback by an acousto-optic modulator. The laser active medium is an Nd:YAG crystal rod, side-pumped by high-brightness laser diodes of 808 nm. When the pump repetition and duration are 200 Hz and 250 μs, the maximum single pulse energy of 85 mJ is produced at an optical conversion efficiency of ~34%, and also a good beam quality of M2 X = 1.80 and M2 Y = 1.78 is obtained in the horizontal and vertical directions respectively. Moreover, a narrow continuous spectrum is achieved with the 3-dB linewidth of 75 pm (i.e. 20 GHz) and the center wavelength of 1064.16 nm. Via the sum frequency generation, such a long-pulse (several hundred μs), narrow-linewidth modeless laser source is preferred for solving the major problem of saturation of the mesospheric sodium atoms and can create a much brighter sodium guide star to meet the needs of adaptive imaging applications in astronomy.

Paper Details

Date Published: 17 May 2019
PDF: 6 pages
Proc. SPIE 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019), 111702E (17 May 2019); doi: 10.1117/12.2533707
Show Author Affiliations
Xiaoming Chen, Institute of Applied Electronics (China)
Key Lab. of Science and Technology on High Energy Laser (China)
Lei Zhang, Institute of Applied Electronics (China)
Key Lab. of Science and Technology on High Energy Laser (China)
Xiafei Xu, Institute of Applied Electronics (China)
Key Lab. of Science and Technology on High Energy Laser (China)
Yanhua Lu, Institute of Applied Electronics (China)
Key Lab. of Science and Technology on High Energy Laser (China)
Huaijin Ren, Institute of Applied Electronics (China)
Key Lab. of Science and Technology on High Energy Laser (China)


Published in SPIE Proceedings Vol. 11170:
14th National Conference on Laser Technology and Optoelectronics (LTO 2019)
Jianqiang Zhu; Weibiao Chen; Zhenxi Zhang; Minlin Zhong; Pu Wang; Jianrong Qiu, Editor(s)

© SPIE. Terms of Use
Back to Top