Single-walled carbon-nanotube saturable absorber assisted Kerr-lens mode-locked Tm:MgWO4 laser

Identifier:  imarina:9172985

Handle: https://hdl.handle.net/20.500.11797/imarina9172985

Authors:  Wang, L; Chen, WD; Zhao, YG; Wang, YC; Pan, ZB; Lin, HF; Zhang, G; Zhang, LZ; Lin, ZB; Bae, JE; Park, TG; Rotermund, F; Loiko, P; Mateos, X; Mero, M; Griebner, U; Petrov, V

Abstract:
© 2020 Optical Society of America We demonstrate sub-100-fs Kerr-lens mode-locking of a Tm:MgWO4 laser emitting at ∼2 µm assisted by a single-walled carbon-nanotube saturable absorber. A maximum average output power of 100 mW is achieved with pulse duration of 89 fs at a pulse repetition rate of ∼86 MHz. The shortest pulse duration derived from frequency-resolved optical gating amounts to 76 fs at 2037 nm, corresponding to nearly bandwidth-limited pulses. To the best of our knowledge, these are the shortest pulses generated from any Tm-doped tungstate crystal and the first report on saturable absorber assisted Kerr-lens mode-locking of a Tm laser at ∼2 µm.