Complex wave-vectors in lossy materials: from polarisation-loss locking to bullseye metasurface

Sinuhé Perea-Puente; Francisco J. Rodríguez-Fortuño

doi:10.1117/12.2620560

24 May 2022 Complex wave-vectors in lossy materials: from polarisation-loss locking to bullseye metasurface

Sinuhé Perea-Puente, Francisco J. Rodríguez-Fortuño

Proceedings Volume 12131, Nanophotonics IX; 121310D (2022) https://doi.org/10.1117/12.2620560
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Abstract

We investigate the connection between losses of a guided mode and polarisation of the associated evanescent waves in the Poincaré sphere, demonstrating a ``polarization-loss locking'' in analogy to spin-momentum locking. From Fermi's golden rule, we investigate its implications for near-field directional coupling, via the introduction of a complex angular spectrum formalism. The use of complex wave-vector in the spectrum inspired us to investigate a method of achieving improved transmission of light across optically opaque materials by introducing a passive metasurface with a varying transmission phase and amplitude simultaneously.

Conference Presentation

Citation Download Citation

Sinuhé Perea-Puente and Francisco J. Rodríguez-Fortuño "Complex wave-vectors in lossy materials: from polarisation-loss locking to bullseye metasurface", Proc. SPIE 12131, Nanophotonics IX, 121310D (24 May 2022); https://doi.org/10.1117/12.2620560

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