Efficient inverse design of large-area metasurfaces for incoherent light

Raphaël Pestourie; Wenjie Yao; Boubacar Kanté; Steven G. Johnson

doi:10.1021/acsphotonics.2c01015

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arXiv · 2207.10701

Efficient inverse design of large-area metasurfaces for incoherent light

Raphaël Pestourie·Wenjie Yao·Boubacar Kanté·Steven G. Johnson

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Abstract

Incoherent light is ubiquitous, yet designing optical devices that can handle its random nature is very challenging, since directly averaging over many incoherent incident beams can require a huge number of scattering calculations. We show how to instead solve this problem with a reciprocity technique which leads to three orders of magnitude speedup: one Maxwell solve (using any numerical technique) instead of thousands. This improvement enables us to perform efficient inverse design, large scale optimization of the metasurface for applications such as light collimators and concentrators. We show the impact of the angular distribution of incident light on the resulting performance, and show especially promising designs for the case of "annular" beams distributed only over nonzero angles.

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Raphaël Pestourie, Wenjie Yao, Boubacar Kanté, Steven G. Johnson. 2022-07-21. Efficient inverse design of large-area metasurfaces for incoherent light. https://doi.org/10.1021/acsphotonics.2c01015

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