Quantitative modeling of gate-tunable cavity exciton-polaritons in transition-metal dichalcogenides
ORAL
Abstract
We present a comprehensive real-space simulation analysis of propagative exciton-polaritons (EPs) of tungsten disulfide (WS2) inside a Fabry–Pérot cavity. The results of our simulations highlight the sensitive dependence between gate voltages and the dispersion relation as well as the propagation length of exciton-polaritons (EPs). We observed peak gating responses in proximity to exciton or trion energy, where electrical gating could enhance or diminish the propagation length of exciton-polaritons (EPs) by a factor of 2 to 3. Additionally, we showcased the potential of gate-tunable exciton-polaritons (EPs) in WS2 by demonstrating their effectiveness in electro-optical modulation applications. Our research reveals the intricate real-space transport properties of gate-tunable cavity exciton-polaritons (EPs) in WS2, laying the foundation for future applications of EPs in nanophotonic devices and circuits.
*Work done at Ames Lab was supported by the U.S. Department of Energy, Office of Basic Energy Science, Division of Materials Sciences and Engineering. Iowa State University operates Ames Laboratory for the U.S. Department of Energy under Contract No. DE-AC02-07CH11358. The National Science Foundation under Grant No DMR1945560 partially supported the study.
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Publication: Quantitative modeling of gate-tunable cavity exciton-polaritons in transition-metal dichalcogenides submitted to Phys Rev Applied.
Presenters
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Raghunandan B. Iyer
- The University of Iowa