Chinese Optics Letters, 2015, 13 (12): 121402, Published Online: Sep. 12, 2018   

High-power, high-energy Ho:YAG oscillator pumped by a Tm-doped fiber laser Download: 1440次

Author Affiliations
Department of Precision Instrument, State Key Laboratory of Precision Measurement Technology and Instruments, Center for Photonics and Electronics, Tsinghua University, Beijing 100084, China
Abstract
A high-power, high-energy Ho:YAG oscillator resonantly pumped by a Tm-doped fiber laser is presented. A maximum continuous output power of 38 W with a slope efficiency of 51.9% is achieved at the wavelength of 2.09 μm, and M21.48. In the Q-switching regime, the maximum pulse energy of 12.8 mJ, corresponding to a 514.5 kW peak power, is obtained at the pulse repetition frequency of 1 kHz. Furthermore, the thermal lens effect of the system is studied theoretically, and the radius of the transverse electromagnetic (TEM00) mode of the laser crystal under different pump powers is given.

Encai Ji, Qiang Liu, Zhenyue Hu, Ping Yan, Mali Gong. High-power, high-energy Ho:YAG oscillator pumped by a Tm-doped fiber laser[J]. Chinese Optics Letters, 2015, 13(12): 121402.

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