High Power Laser Science and Engineering, 2019, 7 (2): 02000e35, Published Online: Jun. 24, 2019
High-repetition-rate and high-power picosecond regenerative amplifier based on a single bulk Nd:GdVO4 crystal Download: 730次
Abstract
We report on a high-repetition-rate, high-power continuously pumped Nd:GdVO4 regenerative amplifier. Numerical simulations successfully pinpoint the optimum working point free of bifurcation instability with simultaneous efficient energy extraction. At a repetition rate of 100 kHz, a maximum output power of 23 W was obtained with a pulse duration of 27 ps, corresponding to a pulse energy of $230~\unicode[STIX]{x03BC}\text{J}$ . The system displayed an outstanding stability with a root mean square power noise as low as 0.3%. The geometry of the optical resonator and the pumping scheme enhanced output power in the $\text{TEM}_{00}$ mode with a single bulk crystal. Accordingly, nearly diffraction-limited beam quality was produced with $M^{2}\approx 1.2$ at full pump power.
Jie Guo, Wei Wang, Hua Lin, Xiaoyan Liang. High-repetition-rate and high-power picosecond regenerative amplifier based on a single bulk Nd:GdVO4 crystal[J]. High Power Laser Science and Engineering, 2019, 7(2): 02000e35.