Prof. Shaogang Guo Profile

Prof. Shaogang Guo

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Proceedings Article | 24 November 2023 Paper

Area expansion effect of glare suppression with low-transmittance eigenchannels of transmission matrices

Hengkang Zhang, Kaige Liu, Li Wang, Mingce Chen, Shaogang Guo, Qiang Liu

Proceedings Volume 12935, 129351E (2023) https://doi.org/10.1117/12.3005956

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Wavefront shaping technique has been applied to actively control the intensity profile of optical speckles, and a recent progress is to realize glare suppression with the low-transmittance eigenchannels of the transmission matrices (TMs). This makes it possible to custom-tailor the speckle fields. For the purpose of suppressing glare at will, research about the properties of low-transmittance eigenchannels in glare suppression is demanded. In this paper, we report the area expansion effect of glare suppression with low-transmittance eigenchannels. With numerical simulations, we found the actual darkened area was larger than the set target area due to the transverse correlation of the speckle field. Their difference is related to the measuring noise of the TM and gets smaller with the increase of the noise intensity. We believe our research could help to design structured speckle fields, and it will be of significant for advanced applications of optical speckles.

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