Refractive Acoustic Devices for Airborne Sound

F. Cervera; L. Sanchis; J. V. Sánchez-Pérez; R. Martínez-Sala; C. Rubio; F. Meseguer; C. López; D. Caballero; J. Sánchez-Dehesa

doi:10.1103/PhysRevLett.88.023902

Refractive Acoustic Devices for Airborne Sound

F. Cervera, L. Sanchis, J. V. Sánchez-Pérez, R. Martínez-Sala, C. Rubio, F. Meseguer, C. López, D. Caballero, and J. Sánchez-Dehesa

Phys. Rev. Lett. 88, 023902 – Published 27 December 2001

Abstract

We show that a sonic crystal made of periodic distributions of rigid cylinders in air acts as a new material which allows the construction of refractive acoustic devices for airborne sound. It is demonstrated that, in the long-wave regime, the crystal has low impedance and the sound is transmitted at subsonic velocities. Here, the fabrication and characterization of a convergent lens are presented. Also, an example of a Fabry-Perot interferometer based on this crystal is analyzed. It is concluded that refractive devices based on sonic crystals behave in a manner similar to that of optical systems.

Received 8 May 2001

DOI:https://doi.org/10.1103/PhysRevLett.88.023902

Authors & Affiliations

F. Cervera, L. Sanchis, J. V. Sánchez-Pérez, R. Martínez-Sala, C. Rubio, and F. Meseguer^*

Centro Tecnológico de Ondas, Unidad Asociada de Investigación (CSIC-UPV), Edificio de Institutos II, Universidad Politécnica de Valencia, E-46022 Valencia, Spain

C. López

Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, Cantoblanco, E-28049 Madrid, Spain

D. Caballero and J. Sánchez-Dehesa^†

Departamento de Física Teórica de la Materia Condensada, Facultad de Ciencias (C-5), Universidad Autónoma de Madrid, E-28049 Madrid, Spain

^*Author to whom correspondence should be addressed. Electronic mails: fmese@fis.upv.es; jose.sanchezdehesa@uam.es
^†Author to whom correspondence should be addressed. Electronic mails: fmese@fis.upv.es; jose.sanchezdehesa@uam.es