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
140.3540 Lasers, Q-switched 140.3580 Lasers, solid-state 140.5680 Rare earth and transition metal solid-state lasers
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 M 2 ≈ 1.48 . 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 (TEM 00 ) 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.