Photonic crystal alloys: A new twist in controlling photonic band structure properties

Hee Jin Kim, Dong Uk Kim, Young Geun Roh, Jaejun Yu, Heonsu Jeon, Q. Han Park

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We identified new photonic structures and phenomenon that are analogous to alloy crystals and the associated electronic bandgap engineering. From a set of diamond-lattice microwave photonic crystals of randomly mixed silica and alumina spheres but with a well defined mixing composition, we observed that both bandedges of the L-point bandgap monotonically shifted with very little bowing as the composition was varied. The observed results were in excellent agreement with the virtual crystal approximation theory originally developed for electronic properties of alloy crystals. This result signifies the similarity and correspondence between photonics and electronics.

Original languageEnglish
Pages (from-to)6579-6585
Number of pages7
JournalOptics Express
Volume16
Issue number9
DOIs
Publication statusPublished - 2008 Apr 28

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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