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Proceedings Paper

Conductively cooled single frequency Nd:YAG laser for remote sensing
Author(s): Jun-tao Wang; Ren Zhu; Ting-ting Lu; Jun Zhou; Hua-guo Zang; Xiao-lei Zhu; Wei-biao Chen
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Paper Abstract

A conductively cooled, laser diode (LD) end pumped, injection-seeded single frequency Nd:YAG laser is designed and implemented. A compact standing wave resonator with dual-end-pumping arrangement is constructed, and two fiber-coupled LDs with maximum output power of 150 W independently are used as the pump source. A composite Nd:YAG rod is utilized as the gain medium with the aim of reducing thermal lens. The optimized ramp-fire technique is applied to build reliable single longitudinal mode oscillating. The laser is capable of producing a 10 mJ Q-switched pulse at the pulse repetition rate of 100 Hz and 250 Hz. Due to the thermal effect in YAG rod, although the single frequency is remained at 1000 Hz, the single pulse energy is decreased to 8.8 mJ. The M2 of the laser beam are no more than 1.3 for all three operation frequency. At 1000 Hz with the output of 8 mJ, the linewidth of 54.2 MHz and the frequency jitter of less than 3.5 MHz (rms) over 2 min are detected by heterodyne technique.

Paper Details

Date Published: 22 August 2011
PDF: 8 pages
Proc. SPIE 8192, International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging, 819233 (22 August 2011); doi: 10.1117/12.900810
Show Author Affiliations
Jun-tao Wang, Shanghai Institute of Optics and Fine Mechanics (China)
Graduate Univ. of Chinese Academy of Sciences (China)
Ren Zhu, Shanghai Institute of Optics and Fine Mechanics (China)
Graduate Univ. of Chinese Academy of Sciences (China)
Ting-ting Lu, Shanghai Institute of Optics and Fine Mechanics (China)
Graduate Univ. of Chinese Academy of Sciences (China)
Jun Zhou, Shanghai Institute of Optics and Fine Mechanics (China)
Hua-guo Zang, Shanghai Institute of Optics and Fine Mechanics (China)
Xiao-lei Zhu, Shanghai Institute of Optics and Fine Mechanics (China)
Wei-biao Chen, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 8192:
International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging
Farzin Amzajerdian; Weibiao Chen; Chunqing Gao; Tianyu Xie, Editor(s)

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