Title

Observation of Defect States in PT-Symmetric Optical Lattices

Authors

Authors

A. Regensburger; M. A. Miri; C. Bersch; J. Nager; G. Onishchukov; D. N. Christodoulides;U. Peschel

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

Phys. Rev. Lett.

Keywords

NON-HERMITIAN HAMILTONIANS; REAL; SPECTRA; MODES; LASER; Physics, Multidisciplinary

Abstract

We provide the first experimental demonstration of defect states in parity-time (PT) symmetric mesh-periodic potentials. Our results indicate that these localized modes can undergo an abrupt phase transition in spite of the fact that they remain localized in a PT-symmetric periodic environment. Even more intriguing is the possibility of observing a linearly growing radiation emission from such defects provided their eigenvalue is associated with an exceptional point that resides within the continuum part of the spectrum. Localized complex modes existing outside the band-gap regions are also reported along with their evolution dynamics.

Journal Title

Physical Review Letters

Volume

110

Issue/Number

22

Publication Date

1-1-2013

Document Type

Article

DOI Link

http://dx.doi.org/10.1103/PhysRevLett.110.223902

Language

English

First Page

5

WOS Identifier

WOS:000319682200013

ISSN

0031-9007

Recommended Citation

"Observation of Defect States in PT-Symmetric Optical Lattices" (2013). Faculty Bibliography 2010s. 4584.
https://stars.library.ucf.edu/facultybib2010/4584