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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2024
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| Accès en ligne: | https://arxiv.org/abs/2406.09342 |
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| _version_ | 1866914833732993024 |
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| author | Lin, Ho-Chun Wang, Zeyu Hsu, Chia Wei |
| author_facet | Lin, Ho-Chun Wang, Zeyu Hsu, Chia Wei |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_09342 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Wavefront shaping simulations with augmented partial factorization Lin, Ho-Chun Wang, Zeyu Hsu, Chia Wei Optics Disordered Systems and Neural Networks Computational Physics 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. |
| title | Wavefront shaping simulations with augmented partial factorization |
| topic | Optics Disordered Systems and Neural Networks Computational Physics |
| url | https://arxiv.org/abs/2406.09342 |