Extension of analytic results for a PT-symmetric structure

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Title: Extension of analytic results for a PT-symmetric structure
Author(s): Jones, HF
Kulishov, M
Item Type: Journal Article
Abstract: The PT-symmetric optical grating with index profile e2ibz has been shown to have the interesting property of being essentially invisible for light incident from one side, while possessing greatly enhanced reflection at a particular wavelength for light incident from the other side. We extend a previous analysis of this grating to obtain an analytic solution for the case when the grating is embedded on a substrate, with different refractive indices on either side. We also generalize the previous case of normal incidence to incidence at an arbitrary angle. In that case the enhanced reflection occurs at a particular angle of incidence for a given wavelength. Finally we discuss how the grating may be used to give lasing.
Publication Date: 14-Mar-2016
Date of Acceptance: 21-Jan-2016
URI: http://hdl.handle.net/10044/1/42218
DOI: https://dx.doi.org/10.1088/2040-8978/18/5/055101
ISSN: 2040-8986
Publisher: IOP Publishing
Journal / Book Title: Journal of Optics
Volume: 18
Issue: 5
Copyright Statement: © 2016 IOP Publishing Ltd
Keywords: Science & Technology
Physical Sciences
Optics
PT symmetry
invisibility
lasing
NON-HERMITIAN HAMILTONIANS
PARITY-TIME SYMMETRY
WAVE-GUIDE
GRATINGS
0205 Optical Physics
0906 Electrical And Electronic Engineering
Publication Status: Published
Article Number: ARTN 055101
Appears in Collections:Physics
Theoretical Physics
Faculty of Natural Sciences



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