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

Autor:	Dim-Lee Kwong, Chee Wei Wong, Mingbin Yu, Nicolae C. Panoiu, Richard M. Osgood, Serdar Kocaman, James F. McMillan, Rohit Chatterjee
Rok vydání:	2009
Předmět:	Superlens Materials science Condensed matter physics Band gap business.industry Superlattice Ab initio Physics::Optics General Physics and Astronomy Metamaterial Dielectric Condensed Matter::Materials Science Negative refraction Optoelectronics business Photonic crystal
Zdroj:	Physical Review Letters. 102
ISSN:	1079-7114 0031-9007
Popis:	We present the first observations of zero-$\overline{n}$ 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::360984cc57dddb44f8c83fc73aa277f7 https://doi.org/10.1103/physrevlett.102.203905 Zobrazit plný text záznamu