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On-Chip Backward Stimulated Brillouin Scattering in Lithium Niobate Waveguides

Citation:

Caique C. Rodrigues, Nick J. Schilder, Roberto O. Zurita, Letícia S. Magalhães, Amirhassan Shams-Ansari, Thiago P. M. Alegre, Marko Lončar, and Gustavo S. Wiederhecker. Submitted. “On-Chip Backward Stimulated Brillouin Scattering in Lithium Niobate Waveguides .” https://arxiv.org/abs/2311.18135.
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Abstract:

We 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 GB=10m−1W−1. Such large gains on simple waveguides open a pathway for unlocking novel opto-electro-mechanical phenomena within the LNOI platform.