[17a-W9_326-1~12] 3.5 Ultrashort-pulse and high-intensity lasers

9:00 AM - 9:15 AM JST(12:00 AM - 12:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[17a-W9_326-1] Ab-initio calculations of high-harmonic generation in amorphous Si (II)

〇(D)Eiyu Gushiken¹, Tomohito Otobe^1,2, Arqum Hashmi¹, Mizuki Tani^1,2, Shunsuke Yamada², Kenichi Ishikawa¹ (1.UTokyo, 2.KPSI)

Keywords:

high-harmonic generation,time-dependent density functional theory,TDDFT,amorphous silicon

We investigate high-harmonic generation (HHG) in amorphous Si using SALMON, an open-source calculation program based on time-dependent density functional theory. Compared with the case of crystalline Si, the spectral intensity in the high-order region above the band-gap energy is suppressed. In addition, multiple plateau structures are formed, revealing similarities to liquid-phase HHG.