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, Yongguang; Wang, Li; Wang, Yicheng; Zhang, Jian; Liu, Peng; Xu, Xiaodong; Liu, Ying; Shen, Deyuan; Bae, Ji Eun; Park, Tae Gwan; Rotermund, Fabian; Mateos, Xavier; Loiko, Pavel; Wang, Zhengping; Xu, Xingguang; Xu, Jun; Mero, Mark; Griebner, Uwe; Petrov, Valentin; Chen, Weidong

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