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Issue 30, 2016
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Revealing the radiative and non-radiative relaxation rates of the fluorescent dye Atto488 in a λ/2 Fabry–Pérot-resonator by spectral and time resolved measurements

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Abstract

Using a Fabry–Pérot-microresonator with controllable cavity lengths in the λ/2-regime, we show the controlled modification of the vibronic relaxation dynamics of a fluorescent dye molecule in the spectral and time domain. By altering the photonic mode density around the fluorophores we are able to shape the fluorescence spectrum and enhance specifically the probability of the radiative transitions from the electronic excited state to distinct vibronic excited states of the electronic ground state. Analysis and correlation of the spectral and time resolved measurements by a theoretical model and a global fitting procedure allows us to reveal quantitatively the spectrally distributed radiative and non-radiative relaxation dynamics of the respective dye molecule under ambient conditions at the ensemble level.

Graphical abstract: Revealing the radiative and non-radiative relaxation rates of the fluorescent dye Atto488 in a λ/2 Fabry–Pérot-resonator by spectral and time resolved measurements

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Article information


Submitted
22 Mar 2016
Accepted
01 Jul 2016
First published
04 Jul 2016

This article is Open Access

Nanoscale, 2016,8, 14541-14547
Article type
Paper

Revealing the radiative and non-radiative relaxation rates of the fluorescent dye Atto488 in a λ/2 Fabry–Pérot-resonator by spectral and time resolved measurements

A. Konrad, M. Metzger, A. M. Kern, M. Brecht and A. J. Meixner, Nanoscale, 2016, 8, 14541
DOI: 10.1039/C6NR02380K

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