期刊
OPTICS AND LASER TECHNOLOGY
卷 133, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.optlastec.2020.106554
关键词
Self-Q-switched pulse laser; Er:Yb:Lu2Si2O7 crystal; Eye-safe 1.55 mu m laser
资金
- National Key Research and Development Program of China [2016YFB0701002]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB20000000]
- Science and Technology Service Network Initiative of the Chinese Academy of Sciences [KFJ-STS-QYZX-069]
- Natural Science Foundation of Fujian Province [2019J01127]
The research demonstrated a high repetition frequency self-Q-switched 1.55 mu m pulse laser in an Er:Yb:Lu2Si2O7 crystal. Changing the pump beam diameter from 400 mu m to 100 mu m increased the repetition frequency to 230 kHz, decreased the duration to 236 ns, and reduced the pulse energy to 1.22 mu J.
An eye-safe 1.55 mu m solid-state pulse laser with high repetition frequency is useful for some applications such as lidar. A high-repetition-frequency self-Q-switched 1.55 mu m pulse laser was firstly demonstrated in an Er:Yb:Lu2Si2O7 crystal end-pumped by a continuous-wave 975 nm diode laser. The influences of various cavity parameters on the self-Q-switched pulse laser performance were investigated. At an absorbed pump power of 6.3 W and a pump beam diameter of 400 mu m, a self-Q-switched 1.55 mu m pulse laser with energy of 3.37 mu J, repetition frequency of 43 kHz, and duration of 1.04 mu s was realized. When the pump beam diameter was changed to 100 mu m, the repetition frequency and duration of the pulse laser increased to 230 kHz and decreased to 236 ns, respectively, while the pulse energy reduced to 1.22 mu J.
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