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Proceedings Paper

Superprism effect in 2D rectangular photonic crystals
Author(s): Alexandru I. Cabuz; Emmanuel Centeno; David Cassagne
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Paper Abstract

In this work, we show that photonic crystals with geometries of lower symmetry, such as the rectangular geometry, are uniquely suited for applications involving the superprism effect. The extra degree of freedom provided by the anisotropy of the unit cell allows more freedom in searching for suitable iso-frequency curves. Also, the appearance of multiple orders of diffraction allows more than one incident plane wave to couple to the same Bloch mode. This extra degree of freedom is decisive when trying to optimize the transmission. We illustrate this on a particular rectangular configuration which ensures a strong angular superprism effect, a well collimated transmitted beam, and power transmissions of up to 80%. We also study the effect of the incident beam width on the super-prism effect, and propose a possible solution to the problem of beam diffraction at the exit surface.

Paper Details

Date Published: 15 September 2004
PDF: 9 pages
Proc. SPIE 5450, Photonic Crystal Materials and Nanostructures, (15 September 2004); doi: 10.1117/12.545806
Show Author Affiliations
Alexandru I. Cabuz, Group d'Etude des Semiconducteurs, CNRS and Univ. Montpellier II (France)
Emmanuel Centeno, Group d'Etude des Semiconducteurs, CNRS and Univ. Montpellier II (France)
David Cassagne, Group d'Etude des Semiconducteurs, CNRS and Univ. Montpellier II (France)

Published in SPIE Proceedings Vol. 5450:
Photonic Crystal Materials and Nanostructures
Richard M. De La Rue; Pierre Viktorovitch; Clivia M. Sotomayor Torres; Michele Midrio, Editor(s)

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