Acoustic Bloch oscillations in a two-dimensional phononic crystal

被引：32

作者：

He, Zhaojian

Peng, Shasha

Cai, Feiyan

Ke, Manzhu

Liu, Zhengyou ^{[1
]}

机构：

[1] Wuhan Univ, Minist Educ, Key Lab Acoust & Photon Mat & Devices, Wuhan 430072, Peoples R China

[2] Wuhan Univ, Dept Phys, Wuhan 430072, Peoples R China

来源：

PHYSICAL REVIEW E | 2007年 / 76卷 / 05期

关键词：

D O I：

10.1103/PhysRevE.76.056605

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We report the observation of acoustic Bloch oscillations at megahertz frequency in a two-dimensional phononic crystal. By creating periodically arrayed cavities with a decreasing gradient in width along one direction in the phononic crystal, acoustic Wannier-Stark ladders are created in the frequency domain. The oscillatory motion of an incident Gaussian pulse inside the sample is demonstrated by both simulation and experiment.

引用

页数：4

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