Fast generation of arbitrary optical focus array
Optics
2024-10-24 v2
Abstract
We report a novel method to generate arbitrary optical focus arrays (OFAs). Our approach rapidly produces computer-generated holograms (CGHs) to precisely control the positions and the intensities of the foci. This is achieved by replacing the fast Fourier transform (FFT) operation in the conventional iterative Fourier-transform algorithm (IFTA) with a linear algebra one, identifying/removing zero elements from the matrices, and employing a generalized weighting strategy. On the premise of accelerating the calculation speed by >70 times, we demonstrate OFA with 99% intensity precision in the experiment. Our method proves effective and is applicable for the systems in which real-time OFA generation is essential.
Cite
@article{arxiv.2206.12661,
title = {Fast generation of arbitrary optical focus array},
author = {Xin Liu and Yiwen Hu and Shijie Tu and Cuifang Kuang and Xu Liu and Xiang Hao},
journal= {arXiv preprint arXiv:2206.12661},
year = {2024}
}