TY - JOUR U1 - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed) A1 - Konrad, Alexander A1 - Metzger, Michael A1 - Kern, Andreas A1 - Brecht, Marc A1 - Meixner, Alfred T1 - 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 JF - Nanoscale N2 - 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. Y1 - 2016 UN - https://nbn-resolving.org/urn:nbn:de:bsz:rt2-opus4-10393 SN - 2040-3364 SS - 2040-3364 U6 - https://doi.org/10.1039/c6nr02380k DO - https://doi.org/10.1039/c6nr02380k VL - 8 IS - 30 SP - 14541 EP - 14547 S1 - 7 PB - Royal Society of Chemistry CY - Cambridge ER -