On negative reflection in a bianisotropic medium

Tom G. Mackay; Akhlesh Lakhtakia

doi:10.1117/12.780754

6 May 2008 On negative reflection in a bianisotropic medium

Tom G. Mackay, Akhlesh Lakhtakia

Proceedings Volume 6987, Metamaterials III; 69871X (2008) https://doi.org/10.1117/12.780754
Event: SPIE Photonics Europe, 2008, Strasbourg, France

Abstract

The vast parameter space associated with bianisotropic mediums supports a host of complex electromagnetic behaviours. Planewave propagation in a bianisotropic medium is generally characterized by four independent wavevectors. We considered planewave propagation in a Faraday chiral medium (FCM), which is a particular bianisotropic medium that combines natural optical activity with Faraday rotation. FCMs may be theoretically conceptualized as metamaterials arising from the homogenization of isotropic chiral mediums with either magnetically biased ferrites or magnetically biased plasmas. Provided that the magnetoelectric coupling is sufficiently large, there are enhanced possibilities for negative-phase-velocity propagation and therefore negative refraction in FCMs. They can also give rise to the phenomenon of negative reflection. That is, an incident plane wave with positive phase velocity can result in a negatively reflected plane wave with negative phase velocity, as well as a positively reflected plane wave with positive phase velocity. Also, an incident plane wave with negative phase velocity can result in a negatively reflected plane wave with positive phase velocity, as well as a positively reflected plane wave with negative phase velocity.

Citation Download Citation

Tom G. Mackay and Akhlesh Lakhtakia "On negative reflection in a bianisotropic medium", Proc. SPIE 6987, Metamaterials III, 69871X (6 May 2008); https://doi.org/10.1117/12.780754

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