Fluorescence lifetime of emitters with broad homogeneous linewidths modified in opal photonic crystals

Ivan S. Nikolaev, Peter Lodahl, Willem L. Vos

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We have investigated the dynamics of spontaneous emission from dye molecules embedded in opal photonic crystals. Fluorescence lifetimes of Rhodamine 6G (R6G) dye were measured as a function of both optical frequency and crystal lattice parameter of the polystyrene opals. Due to the broad homogeneous line width of the dye, the observed fluorescence lifetime varies only slightly with the frequency within the dye emission spectrum. The lifetime however does change as a function of the crystal lattice parameter. Our observations agree with theoretical calculations of the local density of optical states (LDOS) in the three-dimensional photonic crystals. The experiments and theory taken together reveal that the emission lifetime is modified over frequency ranges that are broader than the homogeneous emission line width of R6G dye.
Original languageEnglish
JournalJournal of Physical Chemistry C
Volume112
Issue number18
Pages (from-to)7250-7254
ISSN1932-7447
DOIs
Publication statusPublished - 2008

Cite this