Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session L05: The Chemical Physics of Molecular Polaritons V. Plasmonic Cavities
8:00 AM–10:48 AM,
Wednesday, March 4, 2020
Room: 111
Sponsoring
Units:
DCP DCMP DPOLY
Abstract: L05.00002 : Effect of Stokes shift on molecular polariton dynamics*
Presenter:
Jussi Toppari
(Department of Physics and Nanoscience Center, University of Jyvaskyla)
Authors:
Jussi Toppari
(Department of Physics and Nanoscience Center, University of Jyvaskyla)
Gerrit Groenhof
(Department of Chemistry and Nanoscience Center, University of Jyväskylä)
Tero T Heikkilä
(Department of Physics and Nanoscience Center, University of Jyvaskyla)
We have studied molecular polaritons involving SPPs or optical cavities and different molecules. While the emission of SPP is purely transverse magnetic (TM), that of a SPP-molecule polariton has also a transverse electric (TE) component with the TE/TM ratio following the molecular contribution. Interestingly, we observe that the larger the Stokes shift of the molecule is, the lower is the TE emission. For cavities, the angle dependent emission of the lower CP-molecule polariton while exciting the upper polariton, reveals different pathways depending again on the Stokes shift. While molecules with high Stokes shift seem to induce regular molecule relaxation and excitation of the lower polariton via the fluorescing state, the molecules with no Stoke shift relax to the lower polariton via coupling to vibrational states. In both cases the effect of the molecular relaxation is eminent.
*Funding by Academy of Finland
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