We have studied emission kinetics in dye-doped polymeric films (HITC:PMMA), deposited on top of glass and silver and embedded in Fabry–Perot cavities (metal-insulator-metal waveguides). For highly doped films on glass, we observed strong concentration quenching, as evidenced by a dramatic shortening of the emission kinetics, consistent with our previous studies. However, for the same dye-doped films on top of silver, slower emission kinetics were observed despite the high decay rates of individual dye molecules near the metallic surface. The concentration quenching rates in Fabry–Perot cavities were nearly identical to those of HITC:PMMA films deposited on top of silver. These findings are explained within a theoretical model for the inhibition of Förster energy transfer near a metallic surface. Furthermore, the emission kinetics of the dye-doped films on top of silver were approximately single exponential—consistent with the strong coupling of excited molecules with propagating surface plasmons.
Light-Matter Interaction in Disordered Metal-Dielectric Environments
We studied emission kinetics of HITC dye in disordered metal-dielectric environments and found that the latter, contrary to expectations, can reverse emission kinetics shortening in highly concentrated dyes, caused by a combination of relaxation processes.
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- NSF-PAR ID:
- 10100777
- Date Published:
- Journal Name:
- CLEO: QELS_Fundamental Science 2019
- Page Range / eLocation ID:
- FTu3D.4
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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- Free Publicly Accessible Full Text
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Accepted Manuscript1.0
- Conference Paper:
- https://doi.org/10.1364/CLEO_QELS.2019.FTu3D.4
