Nanooptics in 2D materials

Pablo Alonso González

doi:10.1117/12.3017520

11 June 2024 Nanooptics in 2D materials

Pablo Alonso González

Proceedings Volume PC12991, Nanophotonics X; PC129910S (2024) https://doi.org/10.1117/12.3017520
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Highly anisotropic crystals have recently attracted considerable attention due to their ability to support polaritons with unique properties, such as hyperbolic dispersion, negative phase velocity, or extreme confinement. In particular, the biaxial van der Waals semiconductor α-phase molybdenum trioxide (α-MoO3) has received much attention due to its ability to support in-plane hyperbolic phonon polaritons (PhPs) —infrared (IR) light coupled to lattice vibrations in polar materials with ultra-low losses, offering an unprecedented platform for controlling the flow of energy at the nanoscale. In this talk, we will show experimental demonstrations of the unique behavior of PhPs in these crystals, including the visualization of anomalous cases of the fundamental optical phenomena of refraction and reflection, and the exotic phenomenon of canalization, in which PhPs propagate along a single direction with ultralow losses.

Conference Presentation

Citation Download Citation

Pablo Alonso González "Nanooptics in 2D materials", Proc. SPIE PC12991, Nanophotonics X, PC129910S (11 June 2024); https://doi.org/10.1117/12.3017520

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