Effects of Mid-Infrared Graphene Plasmons on Photothermal Heating
Abstract
Herein, the plasmonic heating of graphene-based systems under the mid-infrared laser irradiation is theoretically investigated, where periodic arrays of graphene plasmonic resonators are placed on dielectric thin films. Optical resonances are sensitive to structural parameters and the number of graphene layers. Under mid-infrared laser irradiation, the steady-state temperature gradients are calculated. It is found that graphene plasmons significantly enhance the confinement of electromagnetic fields in the system and lead to a large temperature increase compared with the case without graphene. The correlations between temperature change and the optical power, laser spot, and thermal conductivity of dielectric layer in these systems are discussed. The numerical results are in accordance with experiments.
- Publication:
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Physica Status Solidi Rapid Research Letters
- Pub Date:
- March 2020
- DOI:
- 10.1002/pssr.201900656
- arXiv:
- arXiv:1912.07763
- Bibcode:
- 2020PSSRR..1400656P
- Keywords:
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- Physics - Applied Physics;
- Condensed Matter - Mesoscale and Nanoscale Physics
- E-Print:
- 6 pages, 4 figures, accepted for publication on PSS-RRL