Fast generation of arbitrary optical focus array
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arXiv
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| Auteurs principaux: | , , , , , |
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| Format: | Preprint |
| Publié: |
2022
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| _version_ | 1866916449039155200 |
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| author | Liu, Xin Hu, Yiwen Tu, Shijie Kuang, Cuifang Liu, Xu Hao, Xiang |
| author_facet | Liu, Xin Hu, Yiwen Tu, Shijie Kuang, Cuifang Liu, Xu Hao, Xiang |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2206_12661 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Fast generation of arbitrary optical focus array Liu, Xin Hu, Yiwen Tu, Shijie Kuang, Cuifang Liu, Xu Hao, Xiang Optics 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. |
| title | Fast generation of arbitrary optical focus array |
| topic | Optics |
| url | https://arxiv.org/abs/2206.12661 |