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

Kocaman, Serdar
Panoiu, N. C.
McMillan, J. F.
Yu, M. B.
Osgood, R. M.
Kwong, D. L.
Wong, C. W.
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.
Physical Review Letters


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Citation Formats
S. Kocaman et al., “Observation of Zeroth-Order Band Gaps in Negative-Refraction Photonic Crystal Superlattices at Near-Infrared Frequencies,” Physical Review Letters, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/28375.