Anomalous photo-induced response by double-pulse excitation in the organic conductor (EDO-TTF)2PF6

Ken Onda, Sho Ogihara, Tadahiko Ishikawa, Yoichi Okimoto, Xiangfeng Shao, Yoshiaki Nakano, Hideki Yamochi, Gunzi Saito, Shin Ya Koshihara

Research output: Contribution to journalArticle

4 Citations (Scopus)


We measured ultrafast reflectivity changes induced by double-pulse excitation in the organic conductor (EDO-TTF)2PF6. Using double-pulse excitation with a relatively high intensity, the sign of reflectivity change became reversed at around 0.8 ps and subsequently the reflectivity change reverted to that of the normal photo-induced state after about 1 ps. Using a optically phase-locked double-pulse with low intensity, we found that the temporal profile excited by an in-phase double-pulse differs from that by an out-of-phase double-pulse despite the time difference between the double-pulses being only 1.31 fs. This was true even when there is almost no overlap between each pulse in the double-pulse. These results indicate that the photo-response in this material to double-pulse excitation differs greatly from the linear sum of the responses to single pulses.

Original languageEnglish
Article number012002
JournalJournal of Physics: Conference Series
Publication statusPublished - Jan 1 2009
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this