Photonic band structure of 3D ordered silica matrices

V. N. Astratov, Yu A. Vlasov, O. Z. Karimov, A. A. Kaplyanskii, Yu G. Musikhin, N. A. Bert, V. N. Bogomolov, A. V. Prokofiev

Research output: Contribution to journalArticlepeer-review

Abstract

The symmetry and orientation of a photonic lattice of 3D ordered porous silica matrices (synthetic opals) are determined by analysis of transmission electron micrographs. By optical transmission measurements the photonic band edges are mapped out at points L and K of the Brillouin zone. It is shown that modulating the refractive index of opal pores by filling them with liquids results in variation of the light attenuation length within the forbidden gap. To increase the refractive index contrast of the lattice, the pores of opals were filled with CdS. A dramatic decrease in attenuation length is observed for opal/CdS. The parameters of a photonic lattice with a 'pseudo-gap', that is, with a prominent depletion of the photonic density of states, are estimated.

Original languageEnglish (US)
Pages (from-to)393-397
Number of pages5
JournalSuperlattices and Microstructures
Volume22
Issue number3
DOIs
StatePublished - Oct 1997
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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