Real-Space Visualization of Canalized Ray Polaritons in a Single Van der Waals Thin Slab

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Polaritons are central to the development of nanophotonics, as they provide mechanisms for manipulating light at nanoscale. A key advancement has been demonstration polariton canalization in which energy flow is directed along a single direction. An intriguing case ray polaritons, characterized by an enhanced density optical states. Experimental demonstrations polaritons scarce and their observation crystal slabs remains elusive. Here, we propose novel polaritonic platform based on thin allowing excitation canalized polaritons. By performing near-field nanoimaging, demonstrate that necessary conditions fulfilled phonon-polaritons mid-IR frequencies α-MoO3 SiO2 substrates. Our real-space images reveal propagation unidirectional exhibiting constant propagating phase. These results might impact compact, low-loss nanodevices applications requiring strong directionality.

Language: Английский

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THERMAL EXPANSION AND VIBRATIONAL SPECTRA OF PARATELLURITE IN QUASI-HARMONIC APPROXIMATION

Ukrainian Journal of Physical Optics, Journal Year: 2024, Volume and Issue: 26(1), P. 01032 - 01039

Published: Dec. 23, 2024

Language: Английский

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