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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

  • 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.

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Author of HS ReutlingenBrecht, Marc
Erschienen in:Nanoscale
Publisher:Royal Society of Chemistry
Place of publication:Cambridge
Document Type:Journal article
Publication year:2016
Page Number:7
First Page:14541
Last Page:14547
DDC classes:600 Technik, Medizin, angewandte Wissenschaften
Open access?:Ja
Licence (German):License Logo  Creative Commons - Namensnennung