Abstract
We propose and experimentally demonstrate dynamical acoustic drill beams presenting nonstationary intensity distributions that resemble the spinning mechanical drill. The drills appear as the spatiotemporal interference of two Bessel-vortex beams of different topological charges and different carrier frequencies. By mixing a pair of high-order Bessel beams, synthesized using two concentric 3D-printed acoustic holograms, acoustic drills of tuned helicities were experimentally observed.
BibTeX citation
@inproceedings{StaliunasMETA2022,
author = {Kestutis Staliunas and Gabrielius Kontenis and Noe Jimenez},
booktitle = {META 2022:12th International Conference on Metamaterials, Photonic Crystals and Plasmonics. Torremolinos, Spain. 19-22 July},
doi = {https://metaconferences.org/},
editor = {Conference proceedings},
month = {7},
organization = {metaconferences},
pages = {593-594},
publisher = {Paris-Saclay University},
series = {Invited},
title = {Acoustic drills by dynamic high-order Bessel beam mixing},
url = {https://metaconferences.org/},
year = {2022}
}