Perfect absorption and no reflection in disordered photonic crystals

Year: 2017

Authors: Wu JH., Artoni M., La Rocca GC.

Autors Affiliation: Northeast Normal Univ, Ctr Quantum Sci, Changchun 130117, Peoples R China; Northeast Normal Univ, Sch Phys, Changchun 130117, Peoples R China; Brescia Univ, Dept Engn & Informat Technol, I-25133 Brescia, Italy; Brescia Univ, INO CNR Sensor Lab, I-25133 Brescia, Italy; Scuola Normale Super Pisa, I-56126 Pisa, Italy; CNISM, I-56126 Pisa, 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: 53862-1  to: 53862-9

More Information: We are grateful to F. Scazza for enlightening discussions on issues of disorder. J.-H.W. would like to thank the Scuola Normale Superiore at Pisa for the hospitality. The work is supported by the National Natural Science Foundation (Grants No. 61378094, No. 10534002, and No. 11674049) of China.
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

Citations: 14
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