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Proceedings Paper

Single-frequency operation of a resonantly pumped 1.645um Er:YAG Q-switched laser
Author(s): Ran Wang; Qing Ye; Yan Zheng; Mingwei Gao; Chunqing Gao
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Paper Abstract

In this paper a resonantly pumped 1.645 μm injection-seeded single frequency Er:YAG Q-switched laser is reported. Firstly we introduce a monolithic Er:YAG non-planar ring oscillator (NPRO) developed by ourselves. The Er:YAG NPRO generated up to 10.5W 1.645 μm single frequency laser output power, with a slope efficiency of 60% and a linewidth of 18.6 kHz. The slave laser is a resonantly pumped Q-switched Er:YAG laser with a U-shape resonator and a 0.25 at.% Er:YAG crystal as the laser medium. When the pulse repetition rate was 1kHz, the Q-switched pulse energy was 5.4 mJ. Then one fraction of the single frequency laser beam from the Er:YAG NPRO was injection-seeded into a Q-switched slave laser. The Ramp-Hold-Fire technique was used to ensure the single frequency operation. Finally we obtained 1.645 μm single frequency Q-switched laser output with a pulse energy of 4.75mJ, pulse width of 336ns and pulse repetition rate of 200Hz, respectively.

Paper Details

Date Published: 28 February 2014
PDF: 5 pages
Proc. SPIE 8959, Solid State Lasers XXIII: Technology and Devices, 89590F (28 February 2014); doi: 10.1117/12.2038432
Show Author Affiliations
Ran Wang, Beijing Institute of Technology (China)
Qing Ye, Beijing Institute of Technology (China)
Yan Zheng, Beijing Institute of Technology (China)
Mingwei Gao, Beijing Institute of Technology (China)
Chunqing Gao, Beijing Institute of Technology (China)

Published in SPIE Proceedings Vol. 8959:
Solid State Lasers XXIII: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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