Ultrafast photocontrol of proton-mediated organic ferroelectric cocrystal. (May 2019)

• Record Type: Journal Article
• Authors: Umanodan, T; Ishikawa, T; Koshihara, S; Horiuchi, S; Okimoto, Y
• Is Part Of: Journal of physics. Volume 1220(2019)
• Publication Date: 2019-05
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1220/1/012012
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: Photoirradiation effect in a ferroelectric cocrystal Hdppz-Hca is investigated in terms of time-resolved second harmonic (SH) generation measurements. By the photoexcitation with a visible pulse (530 nm) causing the intramolecular transition of Hca molecule, the SH intensity was suddenly suppressed by ≈30% on the time scale of picosecond, while the reflectivity scarcely changed. This result is discussed based on reversal of the polarized domain by the photoexcitation.