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Conferences > CLEO_SI > 2022 > SW5E > SW5E.5

Isotropic Topological Second-Order Spatial Differentiator Operating in Transmission Mode

Olivia Y. Long, Cheng Guo, Haiwen Wang, and Shanhui Fan

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Abstract

We design a topological differentiator that operates isotropically in transmission mode at normal incidence. The device an optical transfer function with a symmetry-protected, topological charge of ±2 and performs second-order differentiation.

© 2022 The Author(s)

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