Diffractionless propagation of light in a low-index photonic-crystal film

We experimentally demonstrate diffractionless propagation of light over 12 diffraction lengths in a two-dimensional photonic crystal film made of silicon nitride ( Si N x ) . We show that self-guided beams may propagate for transverse electric (TE) and transverse magnetic (TM) polarized light but at...

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Bibliographic Details
Published in:Applied physics letters 2004-12, Vol.85 (24), p.5854-5856
Main Authors: Iliew, R., Etrich, C., Peschel, U., Lederer, F., Augustin, M., Fuchs, H.-J., Schelle, D., Kley, E.-B., Nolte, S., Tünnermann, A.
Format: Article
Language:English
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Summary:We experimentally demonstrate diffractionless propagation of light over 12 diffraction lengths in a two-dimensional photonic crystal film made of silicon nitride ( Si N x ) . We show that self-guided beams may propagate for transverse electric (TE) and transverse magnetic (TM) polarized light but at slightly different frequencies. Three-dimensional calculations are used to optimize the structure for low loss and narrow beam operation in this low-index photonic crystals. Experimental and theoretical results are in good agreement.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1830675