Development of High-power Yb-based Femtosecond Amplifiers
Shih-Cheng Liu1*, Zhe-Ming Tang1, Te-Yuan Chung2, Ming-Wei Lin3, Ming-Chang Chen1
1Photonics Technologies, National Tsing Hua University, Hsinchu, Taiwan
2Department of Optics and Photonics, National Central University, Taoyuan, Taiwan
3Nuclear Engineering and Science, National Tsing Hua University, Hsinchu, Taiwan
* Presenter:Shih-Cheng Liu,
We report on a home-built high power chirped-pulse amplification (CPA) Yb-based laser system, which can deliver pulse energy of up to 1.5mJ with the output of 20W and a pulse duration of ~250 fs. This laser is first seeded by a femtosecond fiber oscillator and then further amplified by one Yb:KGW regenerative amplifier and one Yb:YAG boost amplifier. Our laser is very suitable for applications of micro-machining and bright high-order harmonic EUV generation.

Keywords: Yb-based, CPA, femtosecond , home-built