Large-Angle, Broadband, and Multifunctional Directive Waveguide Scatterer Gratings
Large-Angle, Broadband, and Multifunctional Directive Waveguide Scatterer Gratings
Conventional surface-relief gratings are inefficient at deflecting normally-incident light by large angles. This constrains their use in many applications and limits the overall efficiency of any optical instrument integrating gratings. Here, we demonstrate a simple approach for the design of diffraction gratings that can be highly efficient for large deflection …