Brillouin nonlinearity characterizations of a high refractive index silicon oxynitride platform
Abstract
Silicon oxynitride (SiON) is a low-loss and versatile material for linear and nonlinear photonics applications. Controlling the oxygen-to-nitrogen (O/N) ratio in SiON provides an effective way to engineer its optical and mechanical properties, making it a great platform for the investigation of on-chip optomechanical interactions, especially the stimulated Brillouin scattering (SBS). Here we report the Brillouin nonlinearity characterization of a SiON platform with a specific O/N ratio (characterized by a refractive index of ). First, we introduce this particular SiON platform with fabrication details. Subsequently, we discuss various techniques for the on-chip Brillouin nonlinearity characterizations. In particular, we focus on the intensity-modulated pump-probe lock-in amplifier technique, which enables ultra-sensitive characterization. Finally, we analyze the Brillouin nonlinearities of this SiON platform and compare them with other SiON platforms. This work underscores the potential of SiON for on-chip Brillouin-based applications. Moreover, it paves the way for Brillouin nonlinearity characterization across various material platforms.
Keywords
Cite
@article{arxiv.2401.12651,
title = {Brillouin nonlinearity characterizations of a high refractive index silicon oxynitride platform},
author = {Kaixuan Ye and Akshay Keloth and Yvan Klaver and Alessio Baldazzi and Gioele Piccoli and Matteo Sanna and Lorenzo Pavesi and Mher Ghulinyan and David Marpaung},
journal= {arXiv preprint arXiv:2401.12651},
year = {2024}
}