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

Identifier:  imarina:9230197

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

Authors:  Wang L; Chen W; Zhao Y; Yang H; Jing W; Pan Z; Huang H; Liu J; Bae JE; Rotermund F; Loiko P; Mateos X; Wang Z; Xu X; Griebner U; Petrov V

Abstract:
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.