Article
Critical States Embedded in the Continuum
CLEO: QELS - Fundamental Science, CLEO_QELS 2015
Abstract
Weintroduce a class of critical states which are embedded in the continuum (CSC) of a one-dimensional optical waveguide array with one non-Hermitian defect. These states are on the verge of being fractal and have real propagation constants. They emerge at a phase transition which is driven by the imaginary refractive index of the defective waveguide and it is accompanied by a mode segregation which reveals analogies with the Dicke super-radiance. Below this point the states are extended while above it they evolve to exponentially localized modes. An addition of a background gain or loss can turn these localized states into bound states in the continuum.
Meeting Name
CLEO: QELS - Fundamental Science (2015: May 10-15, San Jose, CA)
Department(s)
Physics
Keywords and Phrases
- Critical State,
- Hermitians,
- Optical Waveguide Arrays,
- Optical Waveguides
International Standard Book Number (ISBN)
978-1557529688
Document Type
Article - Conference proceedings
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2015 Optical Society of America (OSA), All rights reserved.
Publication Date
5-1-2015
Publication Date
01 May 2015
Disciplines
Citation Information
Milan Koirala, Alexey Yamilov, A. Basiri, Yaron Bromberg, et al.. "Critical States Embedded in the Continuum" CLEO: QELS - Fundamental Science, CLEO_QELS 2015 (2015) Available at: http://works.bepress.com/alexey-yamilov/49/