Kocaman, S and Chatterjee, R and Panoiu, NC and McMillan, JF and Yu, MB and Osgood, RM and Kwong, DL and Wong, CW (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.
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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 publication. A version is also 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 > Electronic and Electrical Engineering |
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