Graphene and SESAM mode-locked Yb:CNGS lasers with self-frequency doubling properties

Identifier:  imarina:5873929

Handle: https://hdl.handle.net/20.500.11797/imarina5873929

Authors:  Kowalczyk, Maciej; Zhang, Xuzhao; Mateos, Xavier; Gao, Shiyi; Wang, Zhengping; Xu, Xinguang; Loiko, Pavel; Rotermund, Fabian; Sotor, Jaroslaw; Griebner, Uwe; Petrov, Valentin

Abstract:
© 2019 Optical Society of America. We report on mode-locking of an Yb:Ca 3 NbGa 3 Si 2 O 14 laser, which is pumped by a fiber-coupled single-mode laser diode. The shortest pulse duration obtained with a semiconductor saturable absorber mirror is 52 fs, with 75 mW of average output power. Sub-60 fs operation tunable between 1055 and 1074 nm is achieved by employing semiconductor absorbers with different characteristics. We also demonstrate passive mode-locking results with transmissive graphene saturable absorber, reaching an 85 fs pulse duration with 23 mW output power. Moreover, we present the non-phase-matched self-frequency doubling properties of this non-centrosymmetric crystal in the femtosecond regime.