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American Physical Society, Physical Review A, 3(84), 2011

DOI: 10.1103/physreva.84.033812

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Formation of collimated beams behind the woodpile photonic crystal

Journal article published in 2011 by José Francisco Trull Silvestre ORCID, Lina Maigyte, Mangirdas Malinauskas, Vygantas Mizeikis, Saulius Juodkazis, Crina Cojocaru, Marius Rutkauskas, Martynas Peckus, Valdas Sirutkaitis, Kestutis Staliunas
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This paper is available in a repository.

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Abstract

We experimentally observe formation of narrow laser beams behind the woodpile photonic crystal, when the beam remains well collimated in free propagation behind the crystal. We show that the collimation depends on the input laser beam’s focusing conditions, and we interpret theoretically the observed effect by calculating the spatial dispersion of propagation eigenmodes and by numerical simulation of paraxial propagation model. ; Peer Reviewed ; Postprint (published version)