On-Chip Shaping of Surface Acoustic Waves via Continuous Diffractive Modulation
Abstract
Precise shaping of surface acoustic waves (SAWs) on anisotropic piezoelectric substrates is complicated by elastic anisotropy and electromechanical coupling. Here we introduce a continuous diffractive acoustic lens (CDAL), in which weak phase-velocity perturbations produced by subwavelength metallization, together with diffraction, drive lateral field redistribution. An anisotropic thin-element propagation model enables efficient inverse design of the CDAL contour. Laser Doppler vibrometry verifies prescribed lateral field profiles and multichannel beam splitting with unequal widths. By combining continuous diffractive modulation with discrete source-phase encoding, we further shape the lateral field into a Bessel profile, demonstrating joint amplitude-and-phase control. This work provides a high-precision and fabrication-compatible mechanism for on-chip SAW field modulation.
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BibTeX
@misc{ma2026onchip,
title = {{On-Chip Shaping of Surface Acoustic Waves via Continuous Diffractive Modulation}},
author = {Yuanpeng Ma and Yang Zhao and Shangyang Chen and Dachuan Sang and Sicheng Wang and Dong Zhang and Xiasheng Guo},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.11267},
eprint = {2610.11267},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.11267},
}
RIS
TY - UNPB
TI - On-Chip Shaping of Surface Acoustic Waves via Continuous Diffractive Modulation
AU - Yuanpeng Ma
AU - Yang Zhao
AU - Shangyang Chen
AU - Dachuan Sang
AU - Sicheng Wang
AU - Dong Zhang
AU - Xiasheng Guo
PY - 2026
DA - 2026/10/08
PB - arXiv
DO - 10.48550/arxiv.2610.11267
UR - https://arxiv.org/abs/2610.11267
AB - Precise shaping of surface acoustic waves (SAWs) on anisotropic piezoelectric substrates is complicated by elastic anisotropy and electromechanical coupling. Here we introduce a continuous diffractive acoustic lens (CDAL), in which weak phase-velocity perturbations produced by subwavelength metallization, together with diffraction, drive lateral field redistribution. An anisotropic thin-element propagation model enables efficient inverse design of the CDAL contour. Laser Doppler vibrometry verifies prescribed lateral field profiles and multichannel beam splitting with unequal widths. By combining continuous diffractive modulation with discrete source-phase encoding, we further shape the lateral field into a Bessel profile, demonstrating joint amplitude-and-phase control. This work provides a high-precision and fabrication-compatible mechanism for on-chip SAW field modulation.
ER -