2023
DOI: 10.1021/acsphotonics.3c01115
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Backscattering-Induced Chiral Absorption in Optical Microresonators

Linhao Ren,
Shixing Yuan,
Song Zhu
et al.

Abstract: Chirality in micro- and nanophotonic structures is crucial for both fundamental research and applied technology. Here, we experimentally demonstrate chiral absorption via backscattering in a single whispering-gallery microresonator under simultaneous excitation from both ports. Remarkably, this scheme does not rely on any nonlinear effects or the breaking of parity or time-reversal symmetry. These intriguing phenomena occur due to the interference between the clockwise- and counterclockwise-propagating light f… Show more

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