SESAM mode-locked Tm:LuYO3 ceramic laser generating 54-fs pulses at 2048 nm

Identifier:  imarina:9138986

Handle: https://hdl.handle.net/20.500.11797/imarina9138986

Authors:  Zhao, YG; Wang, L; Chen, WD; Pan, ZB; Wang, YC; Liu, P; Xu, XD; Liu, Y; Shen, DY; Zhang, J; Guina, M; Mateos, X; Loiko, P; Wang, ZP; Xu, XG; Xu, J; Mero, M; Griebner, U; Petrov, V

Abstract:
© 2020 Optical Society of America. Mode-locked laser operation near 2.05 µm based on a mixed sesquioxide Tm:LuYO3 ceramic is demonstrated. Continuous-wave and wavelength-tunable operation is also investigated. Employing a GaSb-based semiconductor saturable absorber mirror as a saturable absorber, a maximum average output power of 133 mW is obtained for a pulse duration of 59 fs. Pulses as short as 54 fs, i.e., eight optical cycles are generated at a repetition rate of ∼78 MHz with an average output power of 51 mW. To the best of our knowledge, this result represents the shortest pulse duration ever achieved from Tm-based solid-state mode-locked lasers.