标题：High-order harmonic mode-locked Yb-doped fiber laser based on a SnSe2 saturable absorber
作者：Hu, Qiongyu ;Zhang, Xingyu ;Liu, Zhaojun ;Li, Ping ;Li, Ming ;Cong, Zhenhua ;Qin, Zengguang ;Chen, Xiaohan
作者机构：[Hu, Qiongyu ;Zhang, Xingyu ;Liu, Zhaojun ;Li, Ping ;Li, Ming ;Cong, Zhenhua ;Qin, Zengguang ;Chen, Xiaohan ] School of Information Science and Engine 更多
来源：Optics and Laser Technology
摘要：In this paper, tin diselenide (SnSe2) was successfully prepared with liquid phase exfoliation method and embedded into polyvinyl alcohol (PVA) as a saturable absorber (SA) for obtaining harmonic mode-locked Yb-doped fiber laser generations. Based on the fundamental frequency of 333 kHz, four kinds of high-order harmonic mode-locking (HML) with frequencies of 400, 460, 520 and 550 MHz were achieved, corresponding to 1200th, 1380th, 1560th and 1650th order harmonics, with maximum signal to noise ratios (SNRs: 40.55, 37.72, 36.42 and 34.18 dB) and maximum 3 dB spectrum widths (0.2043, 0.3448, 0.216 and 0.3033 nm) as well as minimum pulse widths (759.9, 567.7, 717.3 and 561.4 ps), respectively. This was the first demonstration focusing on the application of SnSe2 in high-order harmonic mode-locked Yb-doped fiber lasers and our results fully proved that SnSe2 had excellent performance in designing high frequency ultra-fast fiber lasers.
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