Ultrashort Pulse Generation in Uv and Duv Range Using Hollow Core Fiber
Ying Kuan Ko1*, Atsushi Yabushita1, Takayoshi Kobayashi1,2, Bing Xue3, Jun Liu2
1Department of Electrophysics, National Chiao-Tung University, Hsinchu, Taiwan
2Advanced Ultrafast Laser Research Center, The University of Electro-Communications, Tokyo, Japan
3Attosecond Science Research Team, RIKEN Center for Advanced Photonics, Saitama, Japan
* presenting author:ying kuan ko, email:kentko78@gmail.com
Ultrafast time-resolved spectroscopy is a powerful technique to study ultrafast dynamics of materials. By using self-phase modulation(SPM) and four-wave mixing (FWM) process in noble gases filled hollow fiber , femtosecond pulses in the UV and DUV range can be generated.
The UV pulse duration was compressed to shorter than 30 fs. Now we are onstructing the DUV Ultrashort Pulse generation system. Applying the ultrashort UV and DUV pulse for time-resolved spectroscopy, ultrafast dynamics of various materials like wide band gap semiconductors and proteins can be studied in the broadband spectral region with high time-resolution.

Keywords: femtosecond pulse, ultraviolet, self-phase modulation, four-wave mixing