| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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High-Power Continuous-Wave and Acousto-Optical Q-Switched Ho:(Sc$_{0.5}$Y$_{0.5}$)$_{2}$SiO$_{5}$ Laser Pumped by Laser Diode |
| Xiao-Ming Duan1**, Guang-Peng Chen1, Ying-Jie Shen2, Li-He Zheng3, Liang-Bi Su3 |
1National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001
2School of Opto-electronic Information Science and Technology, Yantai University, Yantai 264005
3Synthetic Single Crystal Research Center, CAS Key Laboratory of Transparent and Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899
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| Cite this article: |
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Xiao-Ming Duan, Guang-Peng Chen, Ying-Jie Shen et al 2019 Chin. Phys. Lett. 36 064201 |
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Abstract We experimentally investigate the continuous-wave (cw) and acousto-optical (AO) Q-switched performance of a diode-pumped Ho:(Sc$_{0.5}$Y$_{0.5})_{2}$SiO$_{5}$ (Ho:SYSO) laser. A fiber-coupled laser diode at 1.91 μm is employed as the pump source. The cw Ho:SYSO laser produces 13.0 W output power at 2097.9 nm and 56.0% slope efficiency with respect to the absorbed pump power. In the AO Q-switched regime, at a pulse repetition frequency of 5 kHz, the Ho:SYSO laser yields 2.1 mJ pulse energy and 21 ns pulse width, resulting in a calculated peak power of 100 kW. In addition, at the maximum output level, the beam quality factor of the Q-switched Ho:SYSO laser is measured to be about 1.6.
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Received: 06 March 2019
Published: 18 May 2019
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| Fund: Supported by the National Natural Science Foundation of China under Grant Nos 51572053, 61805209 and U1530152. |
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