Analytical framework for angular dispersion engineering of metasurface optics

This work presents a method for modeling and designing phase gradient metasurface profiles to account for varied response dependent on field incidence angle or angular dispersion, a phenomenon of significant recent interest. This method not only can improve existing metasurface design through informed selection of meta-atoms, but enables designs through more generalized metasurface placement, rather than the traditional limitation to being the first or functionally sole element of a given optical system. This work demonstrates the benefits of the method through sample designs demonstrating size, weight, and power (SWaP) reduction, field curvature control, and aberration correction.