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On-Chip Backward Stimulated Brillouin Scattering in Lithium Niobate Waveguides
preprint
posted on 2023-12-02, 17:00 authored by Caique C. Rodrigues, Nick J. Schilder, Roberto O. Zurita, Letícia S. Magalhães, Amirhassan Shams-Ansari, Thiago P. M. Alegre, Marko Lončar, Gustavo S. WiederheckerWe report on the first experimental demonstration of backward stimulated Brillouin scattering (SBS) in Lithium Niobate on Insulator (LNOI) waveguides. Performing polarization-dependent pump-probe experiments, we successfully quantified both intramodal and intermodal scattering among fundamental modes, showcasing substantial gains up to $G_{B}=$10m$^{-1}$W$^{-1}$. Such large gains on simple waveguides open a pathway for unlocking novel opto-electro-mechanical phenomena within the LNOI platform.
