Rovibrational Polaritons in Gas-Phase Methane

• URL: http://arxiv.org/abs/2212.13506v1
• Date: Tue, 27 Dec 2022 14:44:20 GMT
• Title: Rovibrational Polaritons in Gas-Phase Methane
• Authors: Adam D. Wright, Jane C. Nelson, Marissa L. Weichman
• Abstract summary: Polaritonic states arise when a bright optical transition of a molecular ensemble is resonantly matched to an optical cavity mode frequency. We lay the groundwork to study the behavior of polaritons in clean, isolated systems by establishing a new platform for vibrational strong coupling in gas-phase molecules.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Polaritonic states arise when a bright optical transition of a molecular ensemble is resonantly matched to an optical cavity mode frequency. Here, we lay the groundwork to study the behavior of polaritons in clean, isolated systems by establishing a new platform for vibrational strong coupling in gas-phase molecules. We access the strong coupling regime in an intracavity cryogenic buffer gas cell optimized for the preparation of simultaneously cold and dense ensembles, and report a proof-of-principle demonstration in gas-phase methane. We strongly cavity-couple individual rovibrational transitions and probe a range of coupling strengths and detunings. We reproduce our findings with classical cavity transmission simulations in the presence of strong intracavity absorbers. This infrastructure provides a new testbed for benchmark studies of cavity-altered chemistry.

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