Accurate determination of complex χ (2) spectrum of the air/water interface

Satoshi Nihonyanagi, Ryoji Kusaka, Ken Ichi Inoue, Aniruddha Adhikari, Shoichi Yamaguchi, Tahei Tahara

Research output: Contribution to journalArticle

93 Citations (Scopus)

Abstract

Discussion on the structure of the water surface relies on accurate determination of the χ(2) spectrum. For obtaining accurate χ(2) spectrum of the air/water interface in the OH stretch region, we performed heterodyne-detected vibrational sum-frequency generation measurements with a high phase accuracy, and also examined the validity of the phase and amplitude calibration using different non-resonant materials. In contrast to the previous reports, it was concluded that the imaginary part of the χ(2) spectrum of the air/water interface does not exhibit noticeable positive resonance in the low frequency region within the experimental error. This result urges us to reconsider the structure of the air/water interface based on the accurate χ(2) spectrum.

Original languageEnglish
Article number124707
JournalJournal of Chemical Physics
Volume143
Issue number12
DOIs
Publication statusPublished - 2015 Sep 28
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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    Nihonyanagi, S., Kusaka, R., Inoue, K. I., Adhikari, A., Yamaguchi, S., & Tahara, T. (2015). Accurate determination of complex χ (2) spectrum of the air/water interface. Journal of Chemical Physics, 143(12), [124707]. https://doi.org/10.1063/1.4931485