A phase-matching approach for ultrasound hologram generation

Abstract

Ultrasound holography has emerged as a promising technique for non-invasive brain therapies, enabling precise targeting of specific regions. In this context, acoustic holograms can be generated using low-cost 3D-printed acoustic lenses, where the wavefront is encoded into the height of the pixels of a lens. Traditionally, holograms are designed to focus at a planar surface in front of the transducer, resulting in a hyperbolic phase profile under the thin lens approximation. However, when the physical lens thickness exceeds this approximation, aberrations occur. In this work, we propose a phase-matching approach that aligns the phase of the field produced at the exit of the lens with the target phase across a holographic volume. This method is validated through analytical and simulation techniques, demonstrating improved focusing performance compared to traditional methods.

@inproceedings{IUSVegas2025,
 author = {Víctor Vegas-Luque and Diana Andrés and Alba Eroles-Simó and Juan J. Rodríguez-García and Francisco Camarena and Noé Jiménez},
 booktitle = {IUS 2025: International Ultrasound Symposium. Utrecht, Netherlands. 15 - 18 September},
 doi = {https://doi.org/10.1109/IUS62464.2025.11201331},
 editor = {2025 IEEE International Ultrasonics Symposium (IUS)},
 isbn = {ISBN: 978-84-87985-30-4},
 month = {09},
 organization = {Institute of Electrical and Electronics Engineers},
 pages = {1 - 3},
 publisher = {IEEE},
 series = {Poster},
 title = {A phase-matching approach for ultrasound hologram generation},
 url = {https://ieeexplore.ieee.org/abstract/document/11201331},
 year = {2025}
}