1. Raman scattering with strongly coupled vibron-polaritons
- Author
-
Jonathan Keeling, Artem Strashko, EPSRC, The Leverhulme Trust, University of St Andrews. School of Physics and Astronomy, and University of St Andrews. Condensed Matter Physics
- Subjects
Photon ,FOS: Physical sciences ,Physics::Optics ,02 engineering and technology ,01 natural sciences ,Molecular physics ,symbols.namesake ,0103 physical sciences ,Mesoscale and Nanoscale Physics (cond-mat.mes-hall) ,Polariton ,QB Astronomy ,Coherent anti-Stokes Raman spectroscopy ,Physics::Chemical Physics ,010306 general physics ,QC ,QB ,Physics ,Coupling ,Condensed matter physics ,Condensed Matter - Mesoscale and Nanoscale Physics ,DAS ,021001 nanoscience & nanotechnology ,X-ray Raman scattering ,QC Physics ,Molecular vibration ,symbols ,81V55, 81V80, 26C99, 26A06 ,0210 nano-technology ,Raman spectroscopy ,Raman scattering ,Optics (physics.optics) ,Physics - Optics - Abstract
Strong coupling between cavity photons and molecular vibrations can lead to the formation of vibron-polaritons. In a recent experiment with PVAc molecules in a metal-metal microcavity [A.Shalabney et al., Ang.Chem.Int.Ed. 54 7971 (2015)], such a coupling was observed to enhance the Raman scattering probability by several orders of magnitude. Inspired by this, we theoretically analyze the effect of strong photon-vibron coupling on the Raman scattering amplitude of organic molecules. This problem has recently been addressed in [J.del Pino, J.Feist and F.J.Garcia-Vidal; J.Phys.Chem.C 119 29132 (2015)] using exact numerics for a small number of molecules. In this paper we derive compact analytic results for any number of molecules, also including the ultra-strong coupling regime. Our calculations predict a division of the Raman signal into upper and lower polariton modes,with some enhancement to the lower polariton Raman amplitude due to the mode softening under strong coupling., 11 pages, 4 figures
- Published
- 2016