Phase transition dynamics studied by coherent phonon excitation with ultrashort laser pulses

Toshirou Yagi; Jun Kano; Tateo Watanuki; Yuhji Tsujimi; Keith A. Nelson

doi:10.1080/00150190390204240

Phase transition dynamics studied by coherent phonon excitation with ultrashort laser pulses

Toshirou Yagi, Jun Kano, Tateo Watanuki, Yuhji Tsujimi, Keith A. Nelson

Research output: Contribution to journal › Article › peer-review

Abstract

The low-frequency light scattering spectroscopy always encounters experimentally a difficulty near the phase transition point due to the overlapping between the soft mode spectra and the strong elastic-scattering component originated from the surface and/or imperfections irradiated by the laser light. A time-resolved phonon spectroscopy, the coherent phonon excitation method , has been introduced as a new method to compliment the light scattering method. It observe directly the time dependence of the soft phonons excited artificially in terms of pico- or femtosecond laser pulses. Several cases of the studies on TGS, TGSe, KDP, DKDP and LiNbO 3 are briefly mentioned.

Original language	English
Pages (from-to)	3-13
Number of pages	11
Journal	Ferroelectrics
Volume	284
DOIs	https://doi.org/10.1080/00150190390204240
Publication status	Published - Jun 1 2003
Externally published	Yes

Keywords

ISRS
Phase transition
Phonon excitation
Slow dynamics
Soft mode

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1080/00150190390204240

Cite this

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title = "Phase transition dynamics studied by coherent phonon excitation with ultrashort laser pulses",

abstract = "The low-frequency light scattering spectroscopy always encounters experimentally a difficulty near the phase transition point due to the overlapping between the soft mode spectra and the strong elastic-scattering component originated from the surface and/or imperfections irradiated by the laser light. A time-resolved phonon spectroscopy, the coherent phonon excitation method , has been introduced as a new method to compliment the light scattering method. It observe directly the time dependence of the soft phonons excited artificially in terms of pico- or femtosecond laser pulses. Several cases of the studies on TGS, TGSe, KDP, DKDP and LiNbO 3 are briefly mentioned.",

keywords = "ISRS, Phase transition, Phonon excitation, Slow dynamics, Soft mode",

author = "Toshirou Yagi and Jun Kano and Tateo Watanuki and Yuhji Tsujimi and Nelson, {Keith A.}",

note = "Funding Information: The present study has been supported partially by the Grant-in-Aid for Scientific Research (A) and (B) from Japan Society for the Promotion of Science, No. 14204029 and No. 10044050, respectively, and by U.S.NSF Grants No. DMR-9710140 and INT-9418058.",

year = "2003",

month = jun,

day = "1",

doi = "10.1080/00150190390204240",

language = "English",

volume = "284",

pages = "3--13",

journal = "Ferroelectrics",

issn = "0015-0193",

publisher = "Taylor and Francis Ltd.",

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TY - JOUR

T1 - Phase transition dynamics studied by coherent phonon excitation with ultrashort laser pulses

AU - Yagi, Toshirou

AU - Kano, Jun

AU - Watanuki, Tateo

AU - Tsujimi, Yuhji

AU - Nelson, Keith A.

N1 - Funding Information: The present study has been supported partially by the Grant-in-Aid for Scientific Research (A) and (B) from Japan Society for the Promotion of Science, No. 14204029 and No. 10044050, respectively, and by U.S.NSF Grants No. DMR-9710140 and INT-9418058.

PY - 2003/6/1

Y1 - 2003/6/1

N2 - The low-frequency light scattering spectroscopy always encounters experimentally a difficulty near the phase transition point due to the overlapping between the soft mode spectra and the strong elastic-scattering component originated from the surface and/or imperfections irradiated by the laser light. A time-resolved phonon spectroscopy, the coherent phonon excitation method , has been introduced as a new method to compliment the light scattering method. It observe directly the time dependence of the soft phonons excited artificially in terms of pico- or femtosecond laser pulses. Several cases of the studies on TGS, TGSe, KDP, DKDP and LiNbO 3 are briefly mentioned.

AB - The low-frequency light scattering spectroscopy always encounters experimentally a difficulty near the phase transition point due to the overlapping between the soft mode spectra and the strong elastic-scattering component originated from the surface and/or imperfections irradiated by the laser light. A time-resolved phonon spectroscopy, the coherent phonon excitation method , has been introduced as a new method to compliment the light scattering method. It observe directly the time dependence of the soft phonons excited artificially in terms of pico- or femtosecond laser pulses. Several cases of the studies on TGS, TGSe, KDP, DKDP and LiNbO 3 are briefly mentioned.

KW - ISRS

KW - Phase transition

KW - Phonon excitation

KW - Slow dynamics

KW - Soft mode

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DO - 10.1080/00150190390204240

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VL - 284

SP - 3

EP - 13

JO - Ferroelectrics

JF - Ferroelectrics

ER -

Phase transition dynamics studied by coherent phonon excitation with ultrashort laser pulses

Abstract

Keywords

ASJC Scopus subject areas

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