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Proceedings Paper

PT-axisymmetry for extraordinary field confinement
Author(s): M. Botey; Waqas W. Ahmed; R. Herrero; K. Staliunas
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Paper Abstract

Optical Parity-Time (PT-) symmetric systems support unusual properties when the symmetric coupling between internal modes is broken. We propose a new class of quasiperiodic PT-axisymmetric systems which lead to a simultaneous extraordinary field enhancement and localization at the symmetry center. The effect is based on the asymmetric radial coupling of outward to inward propagating waves of the complex structure. We explore such optical potentials in 1D and 2D combining gain/loss and index modulations, which could have actual realizations in nanophotonic structures. As a direct application, we show how to render a broad aperture vertical-cavity surface-emitting lasers (VCSEL) into a bright and narrow beam source.

Paper Details

Date Published: 20 February 2017
PDF: 6 pages
Proc. SPIE 10112, Photonic and Phononic Properties of Engineered Nanostructures VII, 101121P (20 February 2017);
Show Author Affiliations
M. Botey, Univ. Politècnica de Catalunya (Spain)
Waqas W. Ahmed, Univ. Politècnica de Catalunya (Spain)
R. Herrero, Univ. Politècnica de Catalunya (Spain)
K. Staliunas, Univ. Politècnica de Catalunya (Spain)
Institució Catalana de Recerca i Estudis Avançats (Spain)


Published in SPIE Proceedings Vol. 10112:
Photonic and Phononic Properties of Engineered Nanostructures VII
Ali Adibi; Shawn-Yu Lin; Axel Scherer, Editor(s)

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