Xue Wen-Ze, Lin Zhang-Lang, Zeng Huang-Jun, Zhang Ge, Loiko Pavel, Basyrova Liza, Benayad Abdelmjid, Camy Patrice, Petrov Valentin, Mateos Xavier, Wang Li, Chen Weidong
Opt Express. 2022 Apr 25;30(9):15807-15818. doi: 10.1364/OE.459704.
We report on a continuous-wave (CW) and passively mode-locked operation of a fluorite-type Yb:BaF crystal. Pumped with a spatially single-mode, fiber-coupled InGaAs laser diode at 976 nm, the Yb:BaF laser generated a maximum CW output power of 512 mW at 1054.4 nm, corresponding to a laser threshold of 36.5 mW and a slope efficiency of 65.0%. A continuous wavelength tuning across 85 nm (1007-1092 nm) was achieved. By implementing a semiconductor saturable absorber mirror for initiating and sustaining the soliton pulse shaping, near Fourier-transform-limited pulses as short as 52 fs were generated at 1058.2 nm with an average output power of 129 mW at a pulse repetition rate of ∼79.5 MHz. To the best of our knowledge, this is the first report on the passively mode-locked operation of the Yb:BaF crystal.
我们报道了萤石型Yb:BaF晶体的连续波（CW）和被动锁模运转情况。用空间单模、光纤耦合的976nm InGaAs激光二极管泵浦时，Yb:BaF激光器在1054.4nm处产生的最大连续波输出功率为512mW，对应的激光阈值为36.5mW，斜率效率为65.0%。实现了85nm（1007 - 1092nm）的连续波长调谐。通过采用半导体可饱和吸收镜来启动和维持孤子脉冲整形，在1058.2nm处产生了近傅里叶变换极限的短至52fs的脉冲，脉冲重复频率约为79.5MHz，平均输出功率为129mW。据我们所知，这是关于Yb:BaF晶体被动锁模运转的首次报道。
