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20 August 2020 Strong light-matter coupling in hetero-structures of atomically thin semiconductors
Deep Jariwala
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Proceedings Volume 11461, Active Photonic Platforms XII; 114611G (2020) https://doi.org/10.1117/12.2567587
Event: SPIE Nanoscience + Engineering, 2020, Online Only
Abstract
In this talk, we will focus on the subject of strong light-matter coupling in excitonic 2D semiconductors. We will present our recent work on the fundamental physics of light trapping in multi-layer TMDCs when coupled to plasmonic substrates. We systematically demonstrate via calculations and matching experiments that the presence of strong excitonic resonances in multilayers (< 20 nm thickness) combined with surface plasmon excitations of the nearby metals can achieve strongly coupled modes with apparent voided crossings in reflectance spectra. Further, we explore additional light confinement by patterning 1D arrays of rectangular resonators of varying widths and periods (100 nm to 500 nm) showing three mode couplings. We will further present extensions of our studies to resonators with dielectric spaces and optical superlattices in 1D.
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Deep Jariwala "Strong light-matter coupling in hetero-structures of atomically thin semiconductors", Proc. SPIE 11461, Active Photonic Platforms XII, 114611G (20 August 2020); https://doi.org/10.1117/12.2567587
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KEYWORDS
Semiconductors
Plasmonics
Transition metals
Absorption
Molybdenum
Photovoltaics
Tungsten
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