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Effective Tellegen Response in Space-Time Modulated Photonic Crystals

Prudêncio, F. ; Silveirinha, M. G.

Effective Tellegen Response in Space-Time Modulated Photonic Crystals, Proc Metamorphose International Congress on Advanced Electromagnetic Materials in Microwaves and Optics - METAMATERIALS, Siena, Italy, Vol. , pp. - , September, 2022.

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Here, we show that spacetime modulations provide an exciting route to realize the
elusive Tellegen medium response. We describe an analytical formalism to homogenize anisotropic spacetime crystals in the long wavelength limit. It is found that spacetime crystals with suitable symmetry can have a giant Tellegen-type response. The nonreciprocal Tellegen response enables not only interesting applications, such as unidirectional transmission and electromagnetic isolation, but also to probe exciting new forms of light-wave interactions.