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

Bound states in the continuum in PT-symmetric optical lattices

Not Accessible

Your library or personal account may give you access

Abstract

This Letter shows that bound states in the continuum (BIC), which are normalizable modes with energy embedded in the continuous spectrum of scattered states, exist in certain optical waveguide lattices with PT-symmetric defects. There are two distinct types of BIC modes: BIC states that exist in the broken PT phase, and correspond to exponentially localized modes with either exponentially damped or amplified optical power; and BIC modes with sub-exponential spatial localization that also can exist in the unbroken PT phase. These two types of BIC modes at the PT symmetry breaking point behave differently: in the former case, spatial localization is lost and the defect coherently radiates outgoing waves with an optical power that linearly increases with the propagation distance; in the latter case, localization is maintained and the optical power increase is quadratic.

© 2014 Optical Society of America

Full Article  |  PDF Article
More Like This
Bound states in the continuum in a two-dimensional PT-symmetric system

Yaroslav V. Kartashov, Carles Milián, Vladimir V. Konotop, and Lluis Torner
Opt. Lett. 43(3) 575-578 (2018)

Anderson localization of light in PT-symmetric optical lattices

Dragana M. Jović, Cornelia Denz, and Milivoj R. Belić
Opt. Lett. 37(21) 4455-4457 (2012)

Tailoring bound states in the continuum in symmetric photonic crystal slabs by coupling strengths

Zhaojian Zhang, Junbo Yang, Te Du, Hansi Ma, and Xinpeng Jiang
Opt. Express 30(5) 8049-8062 (2022)

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 (2)

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 (6)

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