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Ultrafast Thermal Modification of Strong Coupling in an Organic Microcavity
- Source :
- APL Photonics, Vol 6, Iss 1, Pp 016103-016103-8 (2021)
- Publication Year :
- 2020
- Publisher :
- arXiv, 2020.
-
Abstract
- There is growing interest in using strongly coupled organic microcavities to tune molecular dynamics, including the electronic and vibrational properties of molecules. However, very little attention has been paid to the utility of cavity polaritons as sensors for out-of-equilibrium phenomena, including thermal excitations. Here, we demonstrate that non-resonant infrared excitation of an organic microcavity system induces a transient response in the visible spectral range near the cavity polariton resonances. We show how these optical responses can be understood in terms of ultrafast heating of electrons in the metal cavity mirror, which modifies the effective refractive index and subsequently the strong coupling conditions. The temporal dynamics of the microcavity are strictly determined by carriers in the metal, including the cooling of electrons via electron–phonon coupling and excitation of propagating coherent acoustic modes in the lattice. We rule out multiphoton excitation processes and verify that no real polariton population exists despite their strong transient features. These results suggest the cavity polaritons to be promising as sensitive probes of non-equilibrium phenomena.
- Subjects :
- lcsh:Applied optics. Photonics
Materials science
Computer Networks and Communications
Infrared
Population
Physics::Optics
FOS: Physical sciences
Electron
Molecular physics
Physics - Chemical Physics
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
Polariton
Transient response
education
Chemical Physics (physics.chem-ph)
Condensed Matter - Materials Science
education.field_of_study
Condensed Matter - Mesoscale and Nanoscale Physics
lcsh:TA1501-1820
Materials Science (cond-mat.mtrl-sci)
Atomic and Molecular Physics, and Optics
Coupling (physics)
Ultrashort pulse
Excitation
Physics - Optics
Optics (physics.optics)
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- APL Photonics, Vol 6, Iss 1, Pp 016103-016103-8 (2021)
- Accession number :
- edsair.doi.dedup.....5d5b39e9d569e993c2c1eb71439d0cd8
- Full Text :
- https://doi.org/10.48550/arxiv.2008.10046