Silicon nitride has a high refractive index, making it an essential material for optics and photonics. It exhibits a refractive index of approximately 2.0 at a wavelength of 633 nm, which can vary slightly depending on the material’s composition and deposition conditions. This high refractive index allows for efficient light manipulation and confinement, making silicon nitride suitable for applications such as optical waveguides, lenses, and coatings.
