Chinese Optics Letters, 2019, 17 (11): 111404, Published Online: Sep. 12, 2019
1514 nm eye-safe passively Q-switched self-optical parametric oscillator based on Nd3+-doped MgO:PPLN
140.3540 Lasers, Q-switched 190.4970 Parametric oscillators and amplifiers 140.3480 Lasers, diode-pumped 140.3460 Lasers
Abstract
We examined a 1514 nm eye-safe passively Q-switched self-optical parametric oscillator. The nonlinear crystal is an a-cut Nd:MgO:PPLN crystal, and the size of the crystal was 6 mm × 2 mm × 30 mm with 0.4 at.% Nd3+ doped and a grating period of 29.8 μm. When the crystal absorbed 12.8 W, the output maximum single-pulse energy reached 39 μJ, and a pulse width of 6.1 ns at a repetition rate of 5.4 kHz was obtained. The peak power was 6 kW, giving a slope efficiency of 42%.
Heyan Liu, Yongji Yu, Dehui Sun, Hong Liu, Yuheng Wang, Hao Zheng, Dan Li, Guangyong Jin. 1514 nm eye-safe passively Q-switched self-optical parametric oscillator based on Nd3+-doped MgO:PPLN[J]. Chinese Optics Letters, 2019, 17(11): 111404.