Modified spontaneous emission spectra of laser dye in inverse opal photonic crystals

Henry P. Schriemer*, Henry M. Van Driel, A. Femius Koenderink, Willem L. Vos

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

9 Citations (Scopus)
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Abstract

We have observed strongly modified spontaneous-emission spectra from laser dye in photonic crystals made of inverse opals in titania (TiO2). We identify stop bands with large relative widths of 15%, comparable to the dyes' emission spectrum, and 75% attenuation of the emission strength. For a wide range of angles, two stop bands are simultaneously manifested; their angle-dependent frequencies display an avoided crossing that is corroborated by reflectivity experiments. The edges of the stop bands agree well with band-structure calculations, but differ from simple Bragg diffraction as a result of multiple wave coupling. The strongly reduced dispersion of the Bloch modes likely causes a significant change in the density of states.

Original languageEnglish
Article number011801
Pages (from-to)1-4
Number of pages4
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume63
Issue number1
DOIs
Publication statusPublished - 1 Jan 2001
Externally publishedYes

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