Three-dimensional ultra-broadband focusing flat mirror for airborne sound

Xu Dong Fan, Yi Fan Zhu, Bin Liang*, Jing Yang, Lei Lei Yin, Jun Yang, Jian Chun Cheng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

We report the theoretical design, numerical simulation, and experimental demonstration of a flat mirror capable to efficiently focus the reflected sound in three-dimensional space within an ultra-broad band. The proposed mirror is implemented with a textured rigid surface, enabling simple design and easy fabrication. We analytically derive the distribution of geometric parameters needed for producing ultra-broadband focusing, and verify the performance of resulting mirror both numerically and experimentally. Furthermore, our scheme allows further extending of the working band by resizing individual elements. Our design with simplicity and capability may promote the application of focusing devices generally subject to limited bandwidth.

Original languageEnglish
Article number153501
JournalApplied Physics Letters
Volume109
Issue number15
DOIs
Publication statusPublished - Oct 10 2016
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2016 Author(s).

ASJC Scopus Subject Areas

  • Physics and Astronomy (miscellaneous)

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