TY - CPAPER
AU - Murata, T.
AU - Hachiya, K.
AU - Katsurayama, T.
AU - Kii, T.
AU - Konstantin, T.
AU - Masuda, K.
AU - Nogi, T.
AU - Ohgaki, H.
AU - Suphakul, S.
AU - Torgasin, K.
AU - Yoshida, K.
AU - Zen, H.
TI - Development of Phonon Dynamics Measurement System by MIR-FEL and Pico-second Laser
J2 - Proc. of FEL2015
AB - 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.
PB - JACoW
CY - Geneva, Switzerland
SP - 615
EP - 617
KW - FEL
KW - laser
KW - scattering
KW - timing
KW - lattice
DA - 2015/12
PY - 2015
SN - 978-3-95450-134-2
DO - 10.18429/JACoW-FEL2015-WEP010
UR - http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/wep010.pdf
ER -