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APS » Journals » Phys. Rev. Lett. » Volume 99 » Issue 17
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Phys. Rev. Lett. 99, 174301 (2007) [4 pages]

Extraordinary Acoustic Transmission through a 1D Grating with Very Narrow Apertures

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Ming-Hui Lu, Xiao-Kang Liu, Liang Feng*, Jian Li, Cheng-Ping Huang, Yan-Feng Chen†, Yong-Yuan Zhu, Shi-Ning Zhu, and Nai-Ben Ming
National Laboratory of Solid State Microstructures and Department of Materials Science and Engineering, Nanjing University, Nanjing, 210093, People’s Republic of China

Received 28 May 2007; published 24 October 2007

Recently, there has been an increased interest in studying extraordinary optical transmission (EOT) through subwavelength aperture arrays perforated in a metallic film. In this Letter, we report that the transmission of an incident acoustic wave through a one-dimensional acoustic grating can also be drastically enhanced. This extraordinary acoustic transmission (EAT) has been investigated both theoretically and experimentally, showing that the coupling between the diffractive wave and the wave-guide mode plays an important role in EAT. This phenomenon can have potential applications in acoustics and also might provide a better understanding of EOT in optical subwavelength systems.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.99.174301
DOI:
10.1103/PhysRevLett.99.174301
PACS:
43.35.+d, 42.79.Dj, 73.20.Mf

*Present address: Department of Electrical and Computer Engineering, University of California, San Diego, CA 92093, USA

†To whom correspondence should be addressed.

yfchen@nju.edu.cn

 
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