Subterahertz monochromatic acoustic wave propagation using semiconductor superlattices as transducers

被引：43

作者：

Huynh, A. ^{[1
]}

Perrin, B. ^{[1
]}

Lanzillotti-Kimura, N. D. ^{[1
,2
,3
]}

Jusserand, B. ^{[1
]}

Fainstein, A. ^{[2
,3
]}

Lemaitre, A. ^{[4
]}

机构：

[1] Univ Paris 06, CNRS, INSP, F-75015 Paris, France

[2] CNEA, Ctr Atom Bariloche, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

[3] CNEA, Inst Balseiro, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

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

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 23期

关键词：

phonons; semiconductor superlattices; ultrasonic propagation; ultrasonic transducers;

D O I：

10.1103/PhysRevB.78.233302

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We demonstrate both semiconductor superlattices and nanocavities as narrow-band acoustic transducers in the subterahertz range. Picosecond ultrasonics with pump and probe incident on opposite sides of the substrate allows full decoupling of the phonon generation and detection processes. Pumping in the nanotransducers, we generate spectrally narrow wave packets which propagate over macroscopic distances. Probing in the nanotransducers, we evidence them as very sensitive and spectrally selective detectors.

引用

页数：4

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