[16a-311-1~11] 3.6 Ultrashort-pulse and high-intensity lasers

[16a-311-11] Spatio-Temporal Analysis of Plasma Mirror Formation by Time-Resolved Vacuum Ultraviolet Reflection Spectroscopy

〇Ryuji Itakura¹, Hiroshi Akagi¹, Yoriko Wada¹, Tomohito Otobe¹ (1.QST)

Keywords:plasma mirror, time-resolved vacuum ultraviolet reflection spectroscopy, Frequency-resolved optical gating

We performed time-resolved vacuum-ultraviolet reflection spectroscopy for plasma mirror formation on a fused silca surface irradiated with an intense laser pulse. Using the frequencu-resolved optical gating technique, we revealed the change in the reflectivity from the unexcited surface to the plasma mirrror and the waveform of a VUV pulse. We will present the spatial property of the plasma mirror as well as the temporal property.