Dispersion nonlinearity analysis of immersed gratings

摘要

An immersed grating is a novel diffraction grating with higher spectral resolution than the classical reflective grating given. Its diffractive surface is immersed in an optical material with high refractive index (n 1). This article provides a comprehensive discussion of the nonlinear dispersion of an immersed grating based on the analysis of its diffraction angle and angular dispersion. (C) 2018 Optical Society of America