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 language | English |
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Article number | 153501 |
Journal | Applied Physics Letters |
Volume | 109 |
Issue number | 15 |
DOIs | |
Publication status | Published - Oct 10 2016 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2016 Author(s).
ASJC Scopus Subject Areas
- Physics and Astronomy (miscellaneous)