Open AccessGraphene and SESAM mode-locked Yb:CNGS lasers with self-frequency doubling properties
Author(s) -
Maciej Kowalczyk,
Xuzhao Zhang,
Xavier Mateos,
Shiyi Guo,
Zhengping Wang,
Xinguang Xu,
Pavel Loiko,
Fabıan Rotermund,
Jarosław Sotor,
Uwe Griebner,
Valentín Petrov
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.000590
Subject(s) - materials science , optics , femtosecond , laser , saturable absorption , mode locking , fiber laser , pulse duration , semiconductor laser theory , optoelectronics , diode , semiconductor , physics
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.