[9p-S5-1~12] 3.5 Ultrashort-pulse and high-intensity lasers

1:45 PM - 2:00 PM JST(4:45 AM - 5:00 AM UTC)English Presentation

[9p-S5-2] Dynamical Screening Effects in High-Harmonic Generation from a Silicon Nanocluster

〇(D)SIYUAN LI¹, Arqum Hashmi¹, Mitsuharu Uemoto², Kazuhiro Yabana^1,3, Kenichi L. Ishikawa¹ (1.UTokyo, 2.Kobe Univ., 3.Tsukuba Univ.)

Keywords:

High-harmonic generation,Silicon nanocluster,Dynamical screening

We investigate high-harmonic generation from a hydrogen-passivated silicon nanocluster using first-principles time-dependent density functional theory. By comparing fully self-consistent propagation with frozen and partially time-dependent Hartree/exchange-correlation treatments, we clarify how dynamical screening affects the harmonic intensity and cutoff behavior.