67-fs pulse generation from a mode-locked Tm

Identifier:  imarina:5873947

Handle: https://hdl.handle.net/20.500.11797/imarina5873947

Authors:  Zhao, Yongguang; Wang, Yicheng; Chen, Weidong; Pan, Zhongben; Wang, Li; Dai, Xiaojun; Yuan, Hualei; Zhang, Yan; Cai, Huaqiang; Bae, Ji Eun; Choi, Sun Young; Rotermund, Fabian; Loiko, Pavel; Serres, Josep Maria; Mateos, Xavier; Zhou, Wei; Shen, Deyuan; Griebner, Uwe; Petrov, Valentin

Abstract:
© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. We report on a mode-locked Tm,Ho:CLNGG laser emitting in the 2 µm spectral range using single-walled carbon nanotubes (SWCNTs) as a saturable absorber (SA). Pulses with duration of 98 fs are generated at 99.28 MHz repetition rate with an average output power of 123 mW, yielding a pulse energy of 1.24 nJ. Using a 0.5% output coupling, pulses as short as 67 fs, i.e., 10 optical cycles, are produced after extracavity compression with a 3-mm-thick ZnS plate.