Temporal-filtering dissipative soliton in an optical parametric oscillator  

作　　者：Hui Tong Fuyong Wang Zhipeng Qin Guoqiang Xie Liejia Qian 

机构地区：[1]School of Physics and Astronomy,Key Laboratory for Laser Plasmas(Ministry of Education),Collaborative Innovation Center of IFSA(CICIFSA),Shanghai Jiao Tong University,Shanghai 200240,China [2]School of Information and Electrical Engineering,Hebei University of Engineering,Handan 056038,China

出　　处：《High Power Laser Science and Engineering》2022年第2期80-86,共7页高功率激光科学与工程（英文版）

基　　金：the National Natural Science Foundation of China(Nos.61675130,62075126 and 91850203)。

摘　　要：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 temporalfiltering 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.

关 键 词：cascading nonlinearity dissipative solitons optical parametric oscillators temporal filtering 

分 类 号：TN248[电子电信—物理电子学] TN752