Scientific Results

Perfect absorption and no reflection in disordered photonic crystals

Year: 2017

Authors: Wu J.-H., Artoni M., La Rocca G.C.

Autors Affiliation: Center for Quantum Sciences, School of Physics, Northeast Normal University, Changchun, 130117, China; Department of Engineering and Information Technology, INO-CNR Sensor Lab, Brescia University, Brescia, 25133, Italy; Scuola Normale Superiore, CNISM, Pisa, 56126, Italy

Abstract: Understanding the effects of disorder on the light propagation in photonic devices is of major importance from both fundamental and applied points of view. Unidirectional reflectionless and coherent perfect absorption of optical signals are unusual yet fascinating phenomena that have recently sparked an extensive research effort in photonics. These two phenomena, which arise from topological deformations of the scattering matrix S parameters space, behave differently in the presence of different types of disorder, as we show here for a lossy photonic crystal prototype with a parity-time antisymmetric susceptibility or a more general non-Hermitian one.

Journal/Review: PHYSICAL REVIEW A

Volume: 95 (5)      Pages from: 053862-1  to: 053862-9

KeyWords: Photonic crystals; Scattering parameters, Anti-symmetric; Coherent perfect absorptions; Fascinating phenomena; Optical signals; Reflectionless; Research efforts; Scattering matrices; Topological deformation, Photonic devices
DOI: 10.1103/PhysRevA.95.053862

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