Vibrational Strong Coupling Controlled by Spatial Distribution of Molecules within the Optical Cavity
| Autor: | Adam D. Dunkelberger, Blake S. Simpkins, Wonmi Ahn, Igor Vurgaftman, Jeffrey C. Owrutsky |
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| Rok vydání: | 2017 |
| Předmět: |
Physics::Optics
02 engineering and technology 021001 nanoscience & nanotechnology Spatial distribution 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Delocalized electron law Optical cavity 0103 physical sciences Dispersion (optics) Polariton Energy level Molecule Electrical and Electronic Engineering Atomic physics 010306 general physics 0210 nano-technology Vacuum Rabi oscillation Biotechnology |
| Zdroj: | ACS Photonics. 5:158-166 |
| ISSN: | 2330-4022 |
| DOI: | 10.1021/acsphotonics.7b00583 |
| Popis: | Similar to excitonic materials interacting with optical cavity fields, vibrational absorbers coupled to resonantly matched optical modes can exhibit new hybridized energy states called cavity polaritons. The delocalized nature of these hybrid polaritonic states can potentially modify a material’s physical and chemical characteristics, with the promise of a significant impact on reaction chemistry. In this study, we investigate the relationship between the spatial distribution of vibrational absorbers and the cavity mode profile in vibrational strong coupling by systematically varying the location of a 245-nm-thick poly(methyl methacrylate) (PMMA) film within a few-micrometer-thick Fabry–Perot cavity. Angle-tuning the cavity reveals that the first- and second-order cavity resonances couple to molecular absorption lines of PMMA (the C═O and C–H stretching bands at 1731 and 2952 cm–1, respectively), resulting in quantifiable vacuum Rabi splittings in the dispersion response. These splittings, as extracted fr... |
| Databáze: | OpenAIRE |
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