Study of confined coherent acoustic phonon modes in a free-standing cubic GaN membrane by femtosecond spectroscopy

Chuan He; Martin Grossmann; Delia Brick; Martin Schubert; Sergei V. Novikov; C. Thomas Foxon; Vitalyi Gusev; Anthony J. Kent; Thomas Dekorsy

doi:10.1063/1.4931495

Study of confined coherent acoustic phonon modes in a free-standing cubic GaN membrane by femtosecond spectroscopy

Chuan He^*, Martin Grossmann, Delia Brick, Martin Schubert, Sergei V. Novikov, C. Thomas Foxon, Vitalyi Gusev, Anthony J. Kent, Thomas Dekorsy

^*此作品的通讯作者

科研成果: 期刊稿件 › 文章 › 同行评审

12 引用（Scopus）

摘要

Confined longitudinal coherent acoustic phonon modes are excited and detected in a sub-μm-thick free-standing cubic GaN membrane by femtosecond pump-probe spectroscopy. After fs laser excitation, Brillouin oscillation and thickness oscillation with frequencies up to 100 GHz are observed and studied in the time domain. We found an initial expansion of the membrane upon optical excitation at 400nm. Our experimental results confirmed earlier existing theoretical predictions and experimental observations that the hydrostatic deformation potential of cubic GaN is positive.

源语言	英语
文章编号	112105
期刊	Applied Physics Letters
卷	107
期	11
DOI	https://doi.org/10.1063/1.4931495
出版状态	已出版 - 14 9月 2015
已对外发布	是

访问文件

10.1063/1.4931495

其它文件与链接

链接到 Scopus 的出版物

引用此

He, C., Grossmann, M., Brick, D., Schubert, M., Novikov, S. V., Thomas Foxon, C., Gusev, V., Kent, A. J., & Dekorsy, T. (2015). Study of confined coherent acoustic phonon modes in a free-standing cubic GaN membrane by femtosecond spectroscopy. Applied Physics Letters, 107(11), 文章 112105. https://doi.org/10.1063/1.4931495

@article{c6c8560d42fe47e1913a32c9cdb4c837,

title = "Study of confined coherent acoustic phonon modes in a free-standing cubic GaN membrane by femtosecond spectroscopy",

abstract = "Confined longitudinal coherent acoustic phonon modes are excited and detected in a sub-μm-thick free-standing cubic GaN membrane by femtosecond pump-probe spectroscopy. After fs laser excitation, Brillouin oscillation and thickness oscillation with frequencies up to 100 GHz are observed and studied in the time domain. We found an initial expansion of the membrane upon optical excitation at 400nm. Our experimental results confirmed earlier existing theoretical predictions and experimental observations that the hydrostatic deformation potential of cubic GaN is positive.",

author = "Chuan He and Martin Grossmann and Delia Brick and Martin Schubert and Novikov, {Sergei V.} and {Thomas Foxon}, C. and Vitalyi Gusev and Kent, {Anthony J.} and Thomas Dekorsy",

note = "Publisher Copyright: {\textcopyright} 2015 AIP Publishing LLC.",

year = "2015",

month = sep,

day = "14",

doi = "10.1063/1.4931495",

language = "English",

volume = "107",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "11",

}

TY - JOUR

T1 - Study of confined coherent acoustic phonon modes in a free-standing cubic GaN membrane by femtosecond spectroscopy

AU - He, Chuan

AU - Grossmann, Martin

AU - Brick, Delia

AU - Schubert, Martin

AU - Novikov, Sergei V.

AU - Thomas Foxon, C.

AU - Gusev, Vitalyi

AU - Kent, Anthony J.

AU - Dekorsy, Thomas

PY - 2015/9/14

Y1 - 2015/9/14

N2 - Confined longitudinal coherent acoustic phonon modes are excited and detected in a sub-μm-thick free-standing cubic GaN membrane by femtosecond pump-probe spectroscopy. After fs laser excitation, Brillouin oscillation and thickness oscillation with frequencies up to 100 GHz are observed and studied in the time domain. We found an initial expansion of the membrane upon optical excitation at 400nm. Our experimental results confirmed earlier existing theoretical predictions and experimental observations that the hydrostatic deformation potential of cubic GaN is positive.

AB - Confined longitudinal coherent acoustic phonon modes are excited and detected in a sub-μm-thick free-standing cubic GaN membrane by femtosecond pump-probe spectroscopy. After fs laser excitation, Brillouin oscillation and thickness oscillation with frequencies up to 100 GHz are observed and studied in the time domain. We found an initial expansion of the membrane upon optical excitation at 400nm. Our experimental results confirmed earlier existing theoretical predictions and experimental observations that the hydrostatic deformation potential of cubic GaN is positive.

UR - http://www.scopus.com/inward/record.url?scp=84941992073&partnerID=8YFLogxK

U2 - 10.1063/1.4931495

DO - 10.1063/1.4931495

M3 - Article

AN - SCOPUS:84941992073

SN - 0003-6951

VL - 107

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 11

M1 - 112105

ER -

Study of confined coherent acoustic phonon modes in a free-standing cubic GaN membrane by femtosecond spectroscopy

摘要

访问文件

其它文件与链接

指纹

引用此