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Wave focusing using symmetry matching in axisymmetric acoustic gradient index lenses

The symmetry matching between the source and the lens results of fundamental interest for lensing applications. In this work we have modeled an axisymmetric gradient index (GRIN) lens made of rigid toroidal scatterers embedded in air considering this symmetry matching with radially symmetric sources. The sound amplification obtained in the focal spot of the reported lens (8.24 dB experimentally) shows the efficiency of the axisymmetric lenses with respect to the previous Cartesian acoustic GRIN lenses. The axisymmetric design opens new possibilities in lensing applications in different branches of science and technology.

preprint2013arXivOpen access
V. Romero-GarcíaA. CebrecosR. PicóV. J. Sánchez-MorcilloL. M. Garcia-RaffiJ. V. Sánchez-Pérez
cond-mat.mtrl-sciphysics.optics
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Open access6 authors2 topics
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V. Romero-GarcíaA. CebrecosR. PicóV. J. Sánchez-MorcilloL. M. Garcia-RaffiJ. V. Sánchez-Pérez

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