Control of carrier transport in GaAs by longitudinal-optical phonon-carrier scattering using a pair of laser pump pulses

Muneaki Hase; Daisuke Hayashi; J. D. Lee

doi:10.1063/1.3562188

Control of carrier transport in GaAs by longitudinal-optical phonon-carrier scattering using a pair of laser pump pulses

Muneaki Hase
, Daisuke Hayashi
, J. D. Lee

Department of Physics and Chemistry

University of Tsukuba

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

3 Scopus citations

Abstract

We demonstrate optical control of the LO phonon-plasmon coupled (LOPC) modes in GaAs by using a femtosecond pump-pulse pair. The relaxation time of the plasmonlike LOPC mode significantly depends on the separation time ( t) of the pump-pulse pair. Especially it is maximized when t becomes simultaneously comparable to the half period of the longitudinal optical (LO) phonon oscillation and resonant to the 3/4 period of the plasmonlike LOPC oscillation. We attribute these observations to the modification of carrier-LO phonon scattering and ballistic motion of the plasmonlike LOPC mode.

Original language	English
Article number	073715
Journal	Journal of Applied Physics
Volume	109
Issue number	7
DOIs	https://doi.org/10.1063/1.3562188
State	Published - 1 Apr 2011

Bibliographical note

Funding Information:
This work was supported in part by PRESTO-JST, KAKENHI-22340076 and Special Coordination Funds for Promoting Science and Technology from MEXT, Japan.

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title = "Control of carrier transport in GaAs by longitudinal-optical phonon-carrier scattering using a pair of laser pump pulses",

abstract = "We demonstrate optical control of the LO phonon-plasmon coupled (LOPC) modes in GaAs by using a femtosecond pump-pulse pair. The relaxation time of the plasmonlike LOPC mode significantly depends on the separation time ( t) of the pump-pulse pair. Especially it is maximized when t becomes simultaneously comparable to the half period of the longitudinal optical (LO) phonon oscillation and resonant to the 3/4 period of the plasmonlike LOPC oscillation. We attribute these observations to the modification of carrier-LO phonon scattering and ballistic motion of the plasmonlike LOPC mode.",

author = "Muneaki Hase and Daisuke Hayashi and Lee, \{J. D.\}",

note = "Funding Information: This work was supported in part by PRESTO-JST, KAKENHI-22340076 and Special Coordination Funds for Promoting Science and Technology from MEXT, Japan. ",

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T1 - Control of carrier transport in GaAs by longitudinal-optical phonon-carrier scattering using a pair of laser pump pulses

AU - Hase, Muneaki

AU - Hayashi, Daisuke

AU - Lee, J. D.

N1 - Funding Information: This work was supported in part by PRESTO-JST, KAKENHI-22340076 and Special Coordination Funds for Promoting Science and Technology from MEXT, Japan.

PY - 2011/4/1

Y1 - 2011/4/1

N2 - We demonstrate optical control of the LO phonon-plasmon coupled (LOPC) modes in GaAs by using a femtosecond pump-pulse pair. The relaxation time of the plasmonlike LOPC mode significantly depends on the separation time ( t) of the pump-pulse pair. Especially it is maximized when t becomes simultaneously comparable to the half period of the longitudinal optical (LO) phonon oscillation and resonant to the 3/4 period of the plasmonlike LOPC oscillation. We attribute these observations to the modification of carrier-LO phonon scattering and ballistic motion of the plasmonlike LOPC mode.

AB - We demonstrate optical control of the LO phonon-plasmon coupled (LOPC) modes in GaAs by using a femtosecond pump-pulse pair. The relaxation time of the plasmonlike LOPC mode significantly depends on the separation time ( t) of the pump-pulse pair. Especially it is maximized when t becomes simultaneously comparable to the half period of the longitudinal optical (LO) phonon oscillation and resonant to the 3/4 period of the plasmonlike LOPC oscillation. We attribute these observations to the modification of carrier-LO phonon scattering and ballistic motion of the plasmonlike LOPC mode.

UR - https://www.scopus.com/pages/publications/79955432499

U2 - 10.1063/1.3562188

DO - 10.1063/1.3562188

M3 - Article

AN - SCOPUS:79955432499

SN - 0021-8979

VL - 109

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 7

M1 - 073715

ER -

Control of carrier transport in GaAs by longitudinal-optical phonon-carrier scattering using a pair of laser pump pulses

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