title: Characterization and compression of dissipative-soliton-resonance pulses in fiber lasers.
abstract: We report numerical and experimental studies of dissipative-soliton-resonance (DSR) in a fiber laser with a nonlinear optical loop mirror. The DSR pulse presents temporally a flat-top profile and a clamped peak power. Its spectrum has a rectangle profile with characteristic steep edges. It shows a unique behavior as pulse energy increases: The rectangle part of the spectrum is unchanged while the newly emerging spectrum sits on the center part and forms a peak. Experimental observations match well with the numerical results. Moreover, the detailed evolution of the DSR pulse compression is both numerically and experimentally demonstrated for the first time. An experimentally obtained DSR pulse of 63 ps duration is compressed down to 760 fs, with low-intensity pedestals using a grating pair. Before being compressed to its narrowest width, the pulse firstly evolves into a cat-ear profile, and the corresponding autocorrelation trace shows a crown shape, which distinguishes itself from properties of other solitons formed in fiber lasers.
authors.affiliation: Department of optical science and engineering, Fudan University, Shanghai 200433, China.
authors.forename: Daojing
authors.initials: D
authors.lastname: Li
authors.affiliation: Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Li
authors.affiliation: School of Electrical and Electronic Engineering, University of Adelaide, SA 5005, Australia.
authors.forename: Junyu
authors.initials: J
authors.lastname: Zhou
authors.affiliation: Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, China.
authors.forename: Luming
authors.initials: L
authors.lastname: Zhao
authors.affiliation: Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, China.
authors.forename: Dingyuan
authors.initials: D
authors.lastname: Tang
authors.affiliation: Department of optical science and engineering, Fudan University, Shanghai 200433, China.
authors.forename: Deyuan
authors.initials: D
authors.lastname: Shen