Design of high-Q cavities in photonic crystal slab heterostructures by air-holes infiltration

Snjezana Tomljenovic-Hanic*, C. Martijn De Sterke, M. J. Steel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

74 Citations (Scopus)

Abstract

We design novel photonic crystal slab heterostructures, substituting the air in the holes with materials of refractive index higher than n=1. This can be achieved by infiltrating the photonic crystal slab (PCS) with liquid crystal, polymer or nano-porous silica. We find that the heterostructures designed in this way can have quality factors up to Q=106. This high-Q result is comparable with the result of previously reported designs in which the lattice is elongated in one direction. Unlike conventional heterostructures, our design does not require nanometre-scale changes in the geometry. Additionally, infiltrated PCS can be constructed at any time after PCS fabrication.

Original languageEnglish
Pages (from-to)12451-12456
Number of pages6
JournalOptics Express
Volume14
Issue number25
DOIs
Publication statusPublished - 11 Dec 2006
Externally publishedYes

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