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Graded-Impedance Acoustic Lens Profiles for Non-Dispersive Wave Transmission

A family of impedance profiles derived from the acoustic wave equation that preserve phase velocity (and thus a target refractive index) while minimizing reflections and dispersion from impedance mismatch, demonstrated on 1D and 2D axisymmetric acoustic Luneburg lenses.

B9 Text

2501.00821

Addresses impedance mismatch in graded-index acoustic lenses, whose refractive-index profiles come from the high-frequency (geometric) approximation but ignore reflections and dispersion caused by im…