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DOI:10.18429/JACoW-FEL2015-WEP010
Title Development of Phonon Dynamics Measurement System by MIR-FEL and Pico-second Laser
Authors
  • T. Murata, T. Katsurayama, T. Kii, T. Konstantin, K. Masuda, T. Nogi, H. Ohgaki, S. Suphakul, K. Torgasin, H. Zen
    Kyoto University, Kyoto, Japan
  • K. Hachiya
    Kyoto University Graduate School of Energy Science, Kyoto, Japan
  • K. Yoshida
    Kumamoto University, Department of Applied Chemistry and Biochemistry, Kumamoto, Japan
Abstract Coherent control of a lattice vibration in bulk solid (mode-selective phonon excitation: MSPE) is one of the attractive methods in the solid state physics because it becomes a powerful tool for the study of ultrafast lattice dynamics (e.g. electron-phonon interaction and phonon-phonon interaction). Not only for that, MSPE can control electronic, magnetic, and structural phases of materials. In 2013, we have directly demonstrated MSPE of a bulk material with MIR-FEL (KU-FEL) by anti-Stokes Raman scattering spectroscopy. For the next step, we are starting a phonon dynamics measurement to investigate the difference of physical property between thermally excited phonon (phonon of equilibrium state) and optically excited phonon (phonon of non-equilibrium state) by time-resolved method in combination with a pico-second VIS laser. By using pico-second laser, we also expect to perform the anti-Stokes hyper-Raman scattering spectroscopy to extend MSPE method to the phonon mode which has Raman inactive . As the first step, we have commissioned the time-resolved phonon measurement system and started measurement on 6H-SiC. In this conference, we will present the outline of measurement system, and experimental results.
Paper download WEP010.PDF [0.421 MB / 3 pages]
Conference FEL2015, Daejeon, Republic of Korea
Series International Free Electron Laser Conference (37th)
Proceedings Link to full FEL2015 Proccedings
Session Poster Session
Date 26-Aug-15   15:00–17:00
Main Classification FEL Applications
Keywords FEL, laser, scattering, timing, lattice
Publisher JACoW, Geneva, Switzerland
Editors Heung-Sik Kang (PAL, Pohang, Republic of Korea); Dong Eon Kim (PAL, Pohang, Republic of Korea); Volker RW Schaa (GSI, Darmstadt, Germany);
ISBN 978-3-95450-134-2
Published December 2015
Copyright
Copyright © 2015 by JACoW, Geneva, Switzerland     CC-BY Creative Commons License
cc Creative Commons Attribution 3.0