[16p-K506-1~19] 3.6 Laser processing

2:45 PM - 3:00 PM JST(5:45 AM - 6:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[16p-K506-7] First-principles calculations of energy transfer from femtosecond laser pulse to amorphous silicon monoxide

〇(M2)Eiyu Gushiken¹, Tomohito Otobe², Hiroki Katow¹, Arqum Hashmi¹, Mizuki Tani², Shunsuke Yamada², Kenichi Ishikawa¹ (1.The Univ. of Tokyo, 2.KPSI)

Keywords:

Ablation,Time-Dependent Density Functional Theory,TDDFT,Amorphous silicon monoxide

To investigate the pulse peak intensity dependence of energy absorption of amorphous silicon monoxide (composite material consisting of an amorphous Si cluster and amorphous SiO₂), calculations based on time-dependent density functional theory (TDDFT) were performed using the open-source computational program SALMON. The results revealed that energy absorption occurs due to excitations in the amorphous Si cluster in the low-intensity regime, while in the high-intensity regime, the excitations involve the entire system.