[8p-N405-1~18] 3.5 Ultrashort-pulse and high-intensity lasers

5:45 PM - 6:00 PM JST(8:45 AM - 9:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[8p-N405-16] Complex refraction spectroscopy with double attosecond pulses using a beam splitting mirror

〇(D)Akihiro Oshima^1,2, Hiroki Mashiko¹, Ming-Chang Chen³, Ikufumi Katayama², Jun Takeda⁴, Katsuya Oguri¹ (1.NTT-BRL, 2.Yokohama National Univ., 3.National Tsing Hua Univ., 4.Shibaura Inst. of Technology)

Keywords:

Attosecond Science,Ultrafast spectroscopy

In recent years, time-resolved spectroscopy using isolated attosecond pulse with extremely high temporal resolution and near-infrared pulse has revealed the electron dynamics in material systems. Measuring the intensity changes associated with electronic excitation and the phase of the induced polarization provides some insights into the dynamics of the complex refractive index in the extreme ultraviolet (XUV) region. In this study, we constructed a transient complex refractive index spectroscopy system based on the spectral interferometry with double attosecond pulses, and measured the transient complex response during the autoionization process of argon.