Chinese Optics Letters, 2020, Vol. 18, Issue 3, pp.
LD pumped high-energy single-frequency Er:YAG laser with hundreds of nanoseconds pulse duration
Li Shanghua, Wang Qing, Song Rui, Hou Fangfang, gao mingwei, Gao Chunqing
- Department of Opto-Electronics, Beijing Institute of Technology
- 北京 北京理工大学光电学院431教研室
We demonstrated a high-energy single-frequency Er:YAG laser. With 1470nm LDs as pumping source, single-frequency laser pulses with energy of 28.6 mJ, 21.6 mJ and 15.0 mJ are obtained at pulse repetition frequency (PRF) of 200 Hz, 300 Hz and 500 Hz, respectively. As far as we know, this is the highest single-frequency pulse energy with Er:YAG gain medium . With ring cavity design, pulse duration is maintained at hundreds of nanoseconds. This high energy single frequency laser with hundreds of nanoseconds pulse duration is a prospective laser source for light detection and ranging (Lidar) applications.