A multilayer dielectric transmission grating is made by coating a substrate with an antireflective (AR) coating and placing a dielectric grating on the AR coating. This grating is designed to transmit the maximum amount of light transmitted through the optic into the -1 order. Both the grating and the AR coating are designed to user specifications based on the desired incidence angle and wavelength range. The AR coating and grating act in concert to maximize the transmitted diffraction efficiency.
 The United States Government has rights in this invention pursuant to Contract No. DE-AC52-07NA27344 between the United States Department of Energy and Lawrence Livermore National Security, LLC.