Dissipative solitons have been realized in mode-locked fiber lasers in the theoretical framework of the Ginzburg–Landau equation and have significantly improved the pulse energy and peak power levels of such lasers. It is interesting to explore whether dissipative solitons exist in optical parametric oscillators in the framework of three-wave coupling equations in order to substantially increase the performance of optical parametric oscillators. Here, we demonstrate a temporal-filtering dissipative soliton in a synchronously pumped optical parametric oscillator. The temporal-gain filtering of the pump pulse combined with strong cascading nonlinearity and dispersion in the optical parametric oscillator enables the generation of a broad spectrum with a nearly linear chirp; consequently, a significantly compressed pulse and high peak power can be realized after dechirping outside the cavity. Furthermore, we realized, for the first time, dissipative solitons in an optical system with a negative nonlinear phase shift and anomalous dispersion, extending the parameter region of dissipative solitons. The findings may open a new research block for dissipative solitons and provide new opportunities for mid-infrared ultrafast science.

Hui Tong;Fuyong Wang;Zhipeng Qin;Guoqiang Xie;Liejia Qian

School of Physics and Astronomy, Key Laboratory for Laser Plasmas (Ministry of Education), Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University, Shanghai200240, China;School of Information and Electrical Engineering, Hebei University of Engineering, Handan056038, China

高功率激光科学与工程（英文版）

[1]Hui Tong;Fuyong Wang;Zhipeng Qin;Guoqiang Xie;Liejia Qian-.Temporal-filtering dissipative soliton in an optical parametric oscillator)[J].高功率激光科学与工程（英文版）,2022(02):02000e16

dechirping

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