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Observation of Zeroth-Order Band Gaps in Negative-Refraction Photonic Crystal Superlattices at Near-Infrared Frequencies

Kocaman, S; Chatterjee, R; Panoiu, NC; McMillan, JF; Yu, MB; Osgood, RM; Kwong, DL; (2009) Observation of Zeroth-Order Band Gaps in Negative-Refraction Photonic Crystal Superlattices at Near-Infrared Frequencies. PHYS REV LETT , 102 (20) , Article 203905. 10.1103/PhysRevLett.102.203905. Green open access

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Abstract

We present the first observations of zero-n over bar band gaps in photonic crystal superlattices consisting of alternating stacks of negative-index photonic crystals and positive-index dielectric materials in the near-infrared range. Guided by ab initio three-dimensional numerical simulations, the fabricated nanostructured superlattices demonstrate the presence of zeroth-order gaps in remarkable agreement with theoretical predictions across a range of different superlattice periods and unit cell variations. These volume-averaged zero-index superlattice structures present a new type of photonic band gap, with the potential for complete wave front control for arbitrary phase delay lines and open cavity resonances.

Type: Article
Title: Observation of Zeroth-Order Band Gaps in Negative-Refraction Photonic Crystal Superlattices at Near-Infrared Frequencies
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.102.203905
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.102.203905
Language: English
Additional information: © 2009 The American Physical Society
Keywords: EXPERIMENTAL-VERIFICATION, HANDED MATERIALS, INDEX, METAMATERIALS, LIGHT, PERMEABILITY, PROPAGATION, SUPERLENS
UCL classification: UCL > School of BEAMS > Faculty of Engineering Science
UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering
URI: http://discovery.ucl.ac.uk/id/eprint/142164
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