Chasing Vibro-Polariton Fingerprints in Infrared and Raman Spectra Using Surface Lattice Resonances on Extended Metasurfaces

Francesco Verdelli, Jeff J.P.M. Schulpen, Andrea Baldi, Jaime Gómez Rivas (Corresponding author)

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17 Citaten (Scopus)
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Samenvatting

We present an experimental investigation of vibrational strong coupling of C=O bonds in poly(methyl methacrylate) to surface lattice resonances (SLRs) on arrays of gold particles in infrared and Raman spectra. SLRs are generated from the enhanced radiative coupling of localized resonances in single particles by diffraction in the array. Compared to previous studies in Fabry-Perot cavities, particle arrays provide a fully open system that easily couples with external radiation while having large field confinement close to the array. We control the coupling by tuning the period of the array, as evidenced by the splitting of the C=O vibration resonance in the lower and upper vibro-polaritons of the IR extinction spectra. Despite clear evidence of vibrational strong coupling in IR transmission spectra, both Raman spectroscopy and micro-Raman mapping do not show any polariton signatures. Our results suggest that the search for vibrational strong coupling in Raman spectra may need alternative cavity designs or a different experimental approach.

Originele taal-2Engels
Pagina's (van-tot)7143-7151
Aantal pagina's9
TijdschriftJournal of Physical Chemistry C
Volume126
Nummer van het tijdschrift16
DOI's
StatusGepubliceerd - 18 apr. 2022

Bibliografische nota

Funding Information:
J.G.R. acknowledges the financial support from the Dutch Research Council (NWO) through the talent scheme (Vici Grant no. 680-47-628). A.B. acknowledges the support from the Dutch Research Council (NWO) through the talent scheme (Vidi Grant no. 680-47-550).

Financiering

J.G.R. acknowledges the financial support from the Dutch Research Council (NWO) through the talent scheme (Vici Grant no. 680-47-628). A.B. acknowledges the support from the Dutch Research Council (NWO) through the talent scheme (Vidi Grant no. 680-47-550).

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