Bulk vortices and half-vortex surface modes in parity-time-symmetric media

Huagang Li, Xing Zhu, Zhiwei Shi, Boris A. Malomed, Tianshu Lai, Chaohong Lee

Research output: Contribution to journalArticlepeer-review

Abstract

We demonstrate that in-bulk vortex localized modes and their surface half-vortex ("horseshoe") counterparts self-trap in two-dimensional nonlinear optical systems with PT-symmetric photonic lattices (PLs). The respective stability regions are identified in the underlying parameter space. The in-bulk states are related to truncated nonlinear Bloch waves in gaps of the PL-induced spectrum. The basic vortex and horseshoe modes are built, severally, of four and three beams with appropriate phase shifts between them. Their stable complex counterparts, built of up to 12 beams, are also reported.

Original languageEnglish
Article number053811
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume89
Issue number5
DOIs
StatePublished - 9 May 2014

Funding

FundersFunder number
National Natural Science Foundation of China11374375, 11204043, 61078027, 11274399

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