Computational Design of THz Spectral Splitters

In this work, we demonstrate compact, 3D printable, THz spectral splitters based out of a single planar broadband diffractive optical element, designed to disperse an incident collimated THz beam. For the purpose of this demonstration, we present the design of one such spectral splitter designed to disperse wavelengths from 0.5 to 0.7 THz spatially.