Metasurfaces for nonlinear Brillouin light scattering

Pengteng Li; Jin Yuan; Tianhua Feng

doi:10.1117/12.3047108

13 December 2024 Metasurfaces for nonlinear Brillouin light scattering

Pengteng Li, Jin Yuan, Tianhua Feng

Author Affiliations +

Proceedings Volume 13500, AOPC 2024: Micro-Nano Optics; 1350008 (2024) https://doi.org/10.1117/12.3047108
Event: Applied Optics and Photonics China 2024 (AOPC2024), 2024, Beijing, China

Abstract

Brillouin scattering provides a unique approach in diverse applications ranging from sensing to signal processing and beyond. The recent advancement in Brillouin scattering research has been driven by the development of integrated photonic platforms. However, the realization of efficient Brillouin scattering with substantial gains at low pump powers within compact devices is still a challenge. We propose and demonstrate a chalcogenide metasurface as a promising candidate for facilitating spontaneous Brillouin scattering. By employing GeSbS materials with remarkable photoelastic properties and leveraging the capacity of metasurfaces to effectively confine light waves through quasi-bound states in the continuum, alongside their ability to confine acoustic waves via mechanical resonances, a substantial Brillouin gain of up to 21 dB is achieved at a low pump power of 9.12 mW within a metasurface of compact dimensions less than 0.03 cm. The superior performance of chalcogenide metasurfaces-based Brillouin scattering may hold profound potential to advance Brillouin scattering research and find wide applications.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Pengteng Li, Jin Yuan, and Tianhua Feng "Metasurfaces for nonlinear Brillouin light scattering", Proc. SPIE 13500, AOPC 2024: Micro-Nano Optics, 1350008 (13 December 2024); https://doi.org/10.1117/12.3047108

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