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Resonantly pumped 1645 nm Q-switched Er:YAG laser with a ring cavity |
Lingni ZHU1, Chunqing GAO1( ), Ran WANG1, Mingwei GAO1, Xin WANG2, Hans Joachim EICHLER2 |
| 1. School of Opto-Electronics, Beijing Institute of Technology, Beijing 100081, China; 2. Institute of Optics and Atomic Physics, Technical University Berlin, Berlin 10623, Germany |
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Abstract This paper report an 1645 nm Er:YAG laser resonantly pumped by an Er-fiber laser operating at 1532 nm. 1.78 W continous wave (CW) output power with a slope efficiency of 52% was obtained using a long ring cavity and an 1 at.% doped Er:YAG crystal,. In Q-switched mode, the obtained pulse energy was 1.6 mJ at a repetition rate of 500 Hz; for 1 kHz repetition rate, 1.2 mJ output energy was obtained.
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| Keywords
resonantly pumped laser
Er:YAG laser
ring cavity
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Corresponding Author(s):
GAO Chunqing,Email:gao@bit.edu.cn
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Issue Date: 05 December 2012
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