Wavefront shaping simulations with augmented partial factorization

IF 4.6 Q1 OPTICS Journal of Physics-Photonics Pub Date : 2024-09-15 DOI:10.1088/2515-7647/ad68df
Ho-Chun Lin, Zeyu Wang and Chia Wei Hsu
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Abstract

Wavefront shaping can tailor multipath interference to control multiple scattering of waves in complex optical systems. However, full-wave simulations that capture multiple scattering are computationally demanding given the large system size and the large number of input channels. Recently, an ‘augmented partial factorization’ (APF) method was proposed to significantly speed-up such full-wave simulations. In this tutorial, we illustrate how to perform wavefront shaping simulations with the APF method using the open-source frequency-domain electromagnetic scattering solver MESTI. We present the foundational concepts and then walk through four examples: computing the scattering matrix of a slab with random permittivities, open high-transmission channels through disorder, focusing inside disorder with phase conjugation, and reflection matrix computation in a spatial focused-beam basis. The goal is to lower the barrier for researchers to use simulations to explore the rich phenomena enabled by wavefront shaping.
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利用增强偏因式进行波阵面整形模拟
波前整形可以调整多径干扰,控制复杂光学系统中的多重散射。然而,由于系统规模大、输入通道多,捕捉多重散射的全波模拟计算要求很高。最近,有人提出了一种 "增强偏因式分解"(APF)方法,可显著加快这种全波模拟的速度。在本教程中,我们将说明如何使用开源频域电磁散射求解器 MESTI,利用 APF 方法执行波前整形仿真。我们将介绍基本概念,然后通过四个示例进行说明:计算具有随机介电常数的板的散射矩阵、通过无序打开高传输通道、利用相位共轭在无序内部聚焦,以及在空间聚焦光束基础上计算反射矩阵。目的是降低研究人员使用模拟来探索波前整形所带来的丰富现象的门槛。
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来源期刊
CiteScore
10.70
自引率
0.00%
发文量
27
审稿时长
12 weeks
期刊最新文献
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