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

5:00 PM - 5:15 PM JST(8:00 AM - 8:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[8p-N405-13] Ab-initio calculations of high-harmonic generation in amorphous Si

〇(D)Eiyu Gushiken¹, Tomohito Otobe^1,2, Hiroki Katow¹, Arqum Hashmi¹, Mizuki Tani^1,2, Shunsuke Yamada², Kenichi Ishikawa¹ (1.The Univ. of Tokyo, 2.KPSI)

Keywords:

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

We investigat high-harmonic generation (HHG) in amorphous Si using SALMON, an open-source calculation program based on time-dependent density functional theory. Structural disorder shortens the electron coherence time and reduces the HHG intensity. On the other hand, the spectral shape reflects short-range order and shows a similar trend to that of single-crystal Si, but differences in the plateau structure were found due to the absence of long-range order.