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Proceedings Paper

Acoustic vortex beam generation using a compact metamaterial aperture
Author(s): Charles A. Rohde; Christina J. Naify; Matthew D. Guild; Theodore P. Martin; Jeffrey S. Rogers; David C. Calvo; Gregory J. Orris
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Paper Abstract

We have previously demonstrated an acoustic vortex wave antenna (VWA) based on a metamaterial aperture. This system produced arbitrary angular mode number waveforms,1 but did not produce pure integer mode vortex waves. In this work we extend our previous result to a design which radiates pure integer vortex modes. By combining an acoustic leaky wave antenna with a ring resonator waveguide we produce integer mode acoustic vortex waves. Further, we computationally show that this spatial mode can be transferred between two opposing acoustic vortex wave antenna in a "pitch - catch" configuration.

Paper Details

Date Published: 5 April 2017
PDF: 8 pages
Proc. SPIE 10170, Health Monitoring of Structural and Biological Systems 2017, 101701I (5 April 2017); doi: 10.1117/12.2260164
Show Author Affiliations
Charles A. Rohde, U.S. Naval Research Lab. (United States)
Christina J. Naify, Jet Propulsion Lab. (United States)
Matthew D. Guild, U.S. Naval Research Lab. (United States)
Theodore P. Martin, U.S. Naval Research Lab. (United States)
Jeffrey S. Rogers, U.S. Naval Research Lab. (United States)
David C. Calvo, U.S. Naval Research Lab. (United States)
Gregory J. Orris, U.S. Naval Research Lab. (United States)


Published in SPIE Proceedings Vol. 10170:
Health Monitoring of Structural and Biological Systems 2017
Tribikram Kundu, Editor(s)

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