Mapping phonon polaritons with visible light

Joseph G. Tischler; Kiernan E. Arledge; Michael Meeker; Chase T. Ellis; Nazli Sarabi; Vincent Whiteside; Chul Soo Kim; Mijin Kim; Daniel Ratchford; Binbin Weng

doi:10.1117/12.2692582

9 March 2024 Mapping phonon polaritons with visible light

Joseph G. Tischler, Kiernan E. Arledge, Michael Meeker, Chase T. Ellis, Nazli Sarabi, Vincent Whiteside, Chul Soo Kim, Mijin Kim, Daniel Ratchford, Binbin Weng

Author Affiliations +

Proceedings Volume PC12895, Quantum Sensing and Nano Electronics and Photonics XX; PC1289510 (2024) https://doi.org/10.1117/12.2692582
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

Interrogating surface phonon polariton (SPhP) modes has mostly been pursued by measuring the far field behavior of resonant modes, through which SPhPs can be investigated by looking at resonant frequencies and linewidths along with the strength of the resonances. In other instances, the study of SPhPs has been accomplished by mapping electromagnetic fields solely at the surface of nanostructured resonators by atomic force microscopy assisted techniques and, in some limited cases, measuring the three-dimensional fields using electron scattering. Accurate knowledge of SPhPs has been hindered by the absence of experimental techniques to map eigenstates in three dimensions that are easy, cheap, and non-destructive. Here, confocal Raman microscopy is used to obtain the spatial distribution of phonon modes in nanostructured polar materials. We demonstrated that SPhPs couple to bulk Raman modes through the material's polarizability and, to a lesser extent, via electron-phonon coupling. These observations provide a new method for measuring SPhP modes in nanostructured materials and a novel way to investigate the physical phenomena involved in coupling bulk phonons to SPhPs.

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Citation Download Citation

Joseph G. Tischler, Kiernan E. Arledge, Michael Meeker, Chase T. Ellis, Nazli Sarabi, Vincent Whiteside, Chul Soo Kim, Mijin Kim, Daniel Ratchford, and Binbin Weng "Mapping phonon polaritons with visible light", Proc. SPIE PC12895, Quantum Sensing and Nano Electronics and Photonics XX, PC1289510 (9 March 2024); https://doi.org/10.1117/12.2692582

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