Terahertz time-domain coherent Raman spectroscopy of electrolyte aqueous solutions

Authors

Masahiko Tani ⋅ JP Research Center for Development of Far-Infrared Region, University of Fukui

Abstract

By employing chirped optical pulses, one can obtain coherent Raman spectra of molecules in the terahertz frequency range. This technique, known as Terahertz Time-Domain Coherent Raman Spectroscopy (THz-TDCR), enables us to investigate molecular hydration states, the hydrogen-bonding network of water, and their dynamic behavior. In this study, we present THz Raman spectra of various aqueous electrolyte solutions across different molar concentrations to clarify how electrolyte ions affect water’s intermolecular vibrational modes.
In this presentation, we will cover the measurement principles, describe our experimental apparatus, and discuss how the THz Raman spectral features of different electrolyte solutions vary with ion type.

About the Speaker

Masahiko Tani, Research Center for Development of Far-Infrared Region, University of Fukui

Masahiko Tani is a Professor at the Research Center for Development of Far-Infrared Region in the University of Fukui. He has served as the President of the Terahertz Technology Forum in Japan, member of the IRMMW-THz Society International Organizing Committee, and executive board member of the Spectroscopical Society of Japan. He obtained his Ph.D. from Kyoto University, with specialization on Atomic and Molecular Physics and Spectroscopy. Previously, he has also served as Director of the Research Center for Development of Far-Infrared Region, University of Fukui, Associate Professor at the Institute of Laser Engineering, Osaka University and Research Center for Superconductor Photonics, Osaka University. His fields of research include terahertz spectroscopy, nonlinear optics, terahertz wave applications.

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Issue

2025: Proceedings of the 43rd Samahang Pisika ng Pilipinas Physics Conference

Article ID

SPP-2025-INV-3D-01

Section

Invited Presentations

Published

2025-06-27

How to Cite

[1]

M Tani, Terahertz time-domain coherent Raman spectroscopy of electrolyte aqueous solutions, Proceedings of the Samahang Pisika ng Pilipinas 43, SPP-2025-INV-3D-01 (2025). URL: https://proceedings.spp-online.org/article/view/SPP-2025-INV-3D-01.