SWCNT-SA mode-locked Tm:LuYO3 ceramic laser delivering 8-optical-cycle pulses at 2.05 mu m

Identifier:  imarina:6097017

Handle: https://hdl.handle.net/20.500.11797/imarina6097017

Authors:  Zhao, YG; Wang, L; Wang, YC; Zhang, J; Liu, P; Xu, XD; Liu, Y; Shen, DY; Bae, JE; Park, TG; Rotermund, F; Mateos, X; Loiko, P; Wang, ZP; Xu, XG; Xu, J; Mero, M; Griebner, U; Petrov, V; Chen, WD

Abstract:
Passive mode locking of a Tm : LuYO3 ceramic laser in the 2 mu m spectral region is demonstrated by employing a single-walled carbon nanotube-saturable absorber. Almost chirp-free pulses as short as 57 fs, i.e., 8 optical cycles are produced at a repetition rate of 72.6 MHz (63 mW average power). The corresponding optical spectrum centered at 2045 nm, exhibits a bandwidth of 80 nm, which corresponds to almost chirp-free pulses. To the best of our knowledge, the results represent the shortest pulses generated by mode- locked Tm solid-state lasers. (C) 2020 Optical Society of America