[21p-211A-1~14] 3.6 Ultrashort-pulse and high-intensity lasers

[21p-211A-13] Photoreduction dynamics of graphene oxides by single-shot transient absorption spectroscopy

〇Yusuke Arashida¹, Masaki Ishihara¹, Takayuki Suzuki¹, Tatsuhiro Motoyama¹, Takayoshi Sawa², Shota Mizote², Masaki Hada², Yuta Nishina², Ikufumi Katayama¹, Jun Takeda¹ (1.Yokohama Nat'l Univ., 2.Okayama Univ.)

Keywords:Ultrafast phenomena, Graphene oxides, Single-shot spectroscopy

We measured irreversible change of transient transmittance on graphene oxides to study light-induced reduction of graphene oxides. We performed single-shot imaging spectroscopy based on a Ti:S regenerative amplifier. Comparing the results of a single-shot measurement and 100 cumulative laser shots, the latter showed a fast relaxation component. This result indicates that graphene oxides were gradually reduced during the repetitive laser irradiation.