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Proceedings Paper

Tunable injection-seeded Nd:GSAG laser at 943nm for water vapor detection
Author(s): Xin Wang; Sha Wang; Adelbert Ding; Hans-Joachim Eichler; Zhifeng Lin; Chunqing Gao
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Paper Abstract

Long range water vapor DIAL-systems require efficient and rugged laser sources. The quasi-three-level transition from R1 to Z5 in Nd:GSAG with 943nm wavelength is a promising candidate. An actively Q-switched Nd:GSAG laser was established. Up to 31mJ output pulse energy and up to 26Hz repetition rate was achieved. Injection seeding was used to obtain single frequency operation. The seed laser is a distributed feedback laser diode. Laser frequency was stabilized by ramp-hold-fire method. By tuning the wavelength of the seed laser a 0.83nm tuning range of the pulsed Nd:GSAG laser was obtained. Measured by Fabry-Perot interferometer the spectral line width was approximately 50MHz.

Paper Details

Date Published: 9 October 2009
PDF: 8 pages
Proc. SPIE 7479, Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing V, 74790R (9 October 2009); doi: 10.1117/12.830357
Show Author Affiliations
Xin Wang, Technische Univ. Berlin (Germany)
Sha Wang, Technische Univ. Berlin (Germany)
Adelbert Ding, Technische Univ. Berlin (Germany)
Hans-Joachim Eichler, Technische Univ. Berlin (Germany)
Zhifeng Lin, Beijing Institute of Technology (China)
Chunqing Gao, Beijing Institute of Technology (China)


Published in SPIE Proceedings Vol. 7479:
Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing V
Upendra N. Singh; Gelsomina Pappalardo, Editor(s)

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