Beam dynamics in PT symmetric optical lattices |
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Authors: | Makris K G El-Ganainy R Christodoulides D N Musslimani Z H |
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Institution: | College of Optics & Photonics-CREOL, University of Central Florida, Orlando, Florida 32816, USA. |
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Abstract: | The possibility of parity-time (PT) symmetric periodic potentials is investigated within the context of optics. Beam dynamics in this new type of optical structures is examined in detail for both one- and two-dimensional lattice geometries. It is shown that PT periodic structures can exhibit unique characteristics stemming from the nonorthogonality of the associated Floquet-Bloch modes. Some of these features include double refraction, power oscillations, and eigenfunction unfolding as well as nonreciprocal diffraction patterns. |
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