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

Author:

Wang Li,Chen Weidong,Zhao Yongguang,Yang Hanlin,Jing Wei,Pan Zhongben,Huang Hui,Liu Jiachen,Bae Ji EunORCID,Rotermund Fabian,Loiko Pavel,Mateos Xavier,Wang Zhengping,Xu Xinguang,Griebner Uwe,Petrov Valentin

Abstract

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 approximately 82.9 MHz are generated by employing single-walled carbon nanotubes as a saturable absorber. A 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.

Funder

Deutsche Forschungsgemeinschaft

National Research Foundation of Korea

Publisher

Cambridge University Press (CUP)

Subject

Nuclear Energy and Engineering,Nuclear and High Energy Physics,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials

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