Power-scalable sub-100-fs Tm laser at 2.08 µm

Identificador:  imarina:9230197

Handle: https://hdl.handle.net/20.500.11797/imarina9230197

Autors:  Wang, L; Chen, WD; Zhao, YG; Yang, HL; Jing, W; Pan, ZB; Huang, H; Liu, JC; Bae, JE; Rotermund, F; Loiko, P; Mateos, X; Wang, ZP; Xu, XG; Griebner, U; Petrov, V

Resum:
We report on a power-scalable sub-100-fs laser in the 2-µm spectral range using a Tm3+-doped mixed (Lu,Sc)2O3 sesquioxide ceramic as an active medium. Pulses as short as 58 fs at 2076 nm with an average output power of 114 mW at a pulse repetition rate of ~ 82.9 MHz are generated by employing single-walled carbon nanotubes as a saturable absorber. Higher average power of 350 mW at 2075 nm is obtained at the expense of the pulse duration (65 fs). A maximum average power of 486 mW is achieved for a pulse duration of 98 fs and an optical conversion efficiency of 22.3%, representing the highest value ever reported from sub-100-fs mode-locked Tm-lasers.