Sub-terahertz phonon dynamics in acoustic nanocavities

被引：0

作者：

Lanzillotti-Kimura, N. D. ^{[1
,2
]}

Huynh, A. ^{[1
]}

Jusserand, B. ^{[1
]}

Perrin, B. ^{[1
]}

Fainstein, A. ^{[2
]}

Pascual-Winter, M. F. ^{[1
,2
]}

Peronne, E. ^{[1
]}

Lemaitre, A. ^{[3
]}

机构：

[1] Univ Paris 06, INSP, CNRS, Campus Boucicaut,140 Rue Lourmel, F-75015 Paris, France

[2] CNEA, Ctr Atom Bariloche, Inst Balseiro, San Carlos De Bariloche, Argentina

[3] LPN CNRS, F-91460 Marcoussis, France

来源：

PHYSICS OF SEMICONDUCTORS, PTS A AND B | 2007年 / 893卷

关键词：

acoustic phonons; cavities; pump-probe spectroscopy;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We report a direct determination of the dynamic behavior of confined acoustic phonons in nanocavities by picosecond acoustics. We provide the broadband, high resolution transmission amplitude curve in the sub-terahertz range and we give evidence of resonant transmission peaks in three successive stop bands, in quantitative agreement with transfer matrix simulations. We demonstrate transit times in the nanosecond range at the cavity peaks reflecting the strong phonon confinement within the cavity layer and picosecond times in the stop bands, shorter than in any of the constituting materials, a tunneling effect known in photonic systems as superluminal propagation.

引用

页码：1131 / +

页数：2

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