Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

PT symmetry in optics beyond the paraxial approximation

Not Accessible

Your library or personal account may give you access

Abstract

The concept of the PT symmetry, originating from the quantum field theory, has been intensively investigated in optics, stimulated by the similarity between the Schrödinger equation and the paraxial wave equation governing the propagation of light in guiding structures. We go beyond the paraxial approximation and demonstrate, solving the full set of the Maxwell’s equations for the light propagation in deeply subwavelength waveguides and periodic lattices with balanced gain and loss, that the PT symmetry may stay unbroken in this setting. Moreover, the PT symmetry in subwavelength guiding structures may be restored after being initially broken upon the increase of gain and loss. Critical gain/loss levels, at which the breakup and subsequent restoration of the PT symmetry occur, strongly depend on the scale of the structure.

© 2014 Optical Society of America

Full Article  |  PDF Article
More Like This
Analysis of PT -symmetric volume gratings beyond the paraxial approximation

Mykola Kulishov, H. F. Jones, and Bernard Kress
Opt. Express 23(7) 9347-9362 (2015)

General formalism for Bragg acousto-optic interaction beyond the paraxial approximation

Chen-Wen Tarn and Ray S. Huang
J. Opt. Soc. Am. A 14(11) 3046-3056 (1997)

Bound states in the continuum in PT-symmetric optical lattices

Stefano Longhi
Opt. Lett. 39(6) 1697-1700 (2014)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved