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Journal article

Light dynamics in PT-symmetric multilayers: phase transition, nonreciprocity, and propagation direction locking

By Novitsky, Denis V.1; Karabchevsky, Alina2; Lavrinenko, Andrei V.3,4; Shalin, Alexander S.5; Novitsky, Andrey V.3,4

From

National Academy of Sciences of Belarus1

Ben-Gurion University of the Negev2

Department of Photonics Engineering, Technical University of Denmark3

Metamaterials, Department of Photonics Engineering, Technical University of Denmark4

St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO)5

We report the numerical study of PT-symmetry breaking in one-dimensional structures with resonantly absorbing and amplifying layers described by the Maxwell-Bloch equations. Temporal dynamics of light interacting with such a structure is governed by strong field amplification and subsequent saturation of loss and gain above the exceptional point resulting in the lasing-like regime with powerful pulses generated both in reflection and transmission.

In this regime, we predict and investigate the uniqueness of phase transition due to saturation, transmission nonreciprocity, and the direction locking of the transmitted and reflected radiation.

Language: English
Publisher: IOP Publishing
Year: 2018
Pages: 012100
Proceedings: International Conference on Metamaterials and Nanophotonics
ISSN: 17426596 and 17426588
Types: Journal article
DOI: 10.1088/1742-6596/1092/1/012100
ORCIDs: Lavrinenko, Andrei V.

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