Self collimation of ultrasound in a 3D sonic crystal
arXiv:0902.1707 · doi:10.1063/1.3104861
Abstract
We present the experimental demonstration of self-collimation (subdiffractive propagation) of an ultrasonic beam inside a three-dimensional sonic crystal. The crystal is formed by two crossed steel cylinders structures in a woodpile-like geometry disposed in water. Measurements of the 3D field distribution show that a narrow beam which diffractively spreads in the absence of the sonic crystal is strongly collimated in propagation inside the crystal, demonstrating the 3D self-collimation effect.
3 figures, submitted to Applied Physics Letters
References in corpus (2)
Cited by in corpus (5)
- Two-Dimensional Structure-Embedded Acoustic Lenses based on Periodic Acoustic Black Holes
- Formation of collimated sound beams by three-dimensional sonic crystals
- Spatial adiabatic passage processes in sonic crystals with linear defects
- Splitting of self-collimated beams in two-dimensional sonic crystals
- Nonlinear self-collimated sound beams in sonic crystals