8.8 GHz Q-switched mode-locked waveguide lasers modulated by PtSe2 saturable absorber
8.8 GHz Q-switched mode-locked waveguide lasers modulated by PtSe2 saturable absorber
复制标题
PtSe2 可饱和吸收体调制的 8.8 GHz 调Q 锁模波导激光器
DOI：
10.1364/oe.27.008727
复制
发表时间：
2019-03-18
期刊：
影响因子：
3.8
通讯作者：
Chen, Feng
中科院分区：
文献类型：
--
作者：
Li, Ziqi;Li, Rang;Chen, Feng
We demonstrate high-repetition-rate fundamentally Q-SWitched mode-locked Nd:YAG waveguide laser modulated by platinum diselenide (PtSe2) saturable absorber. The laser operation platfonu is a femtosecond laser-written monolithic Nd:YAG waveguide, and the saturable absorber is large-area few-layer PtSe2 that possesses relatively lower saturation intensity and higher modulation depth in comparison with graphene. With the superb ultrafast nonlinear saturable absorption properties of as-synthesized PtSe2, the waveguide laser could operate at similar to 8.8 GHz repetition rate and similar to 27 ps pulse duration, while maintaining a relatively high slope efficiency of 26% and high stability with signal-to-noise ratio (SNR) up to 54 dB. Our work indicates the promising applications of laser-written Nd:YAG waveguides and atomically thin PtSe2 for on-chip integration of GHz laser sources toward higher repetition rates and shorter pulse duration. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
