A spectrum splitter is an optical device designed to separate light or other forms of electromagnetic energy into its component wavelengths. This process is fundamentally different from a simple power divider, which merely reduces signal strength across multiple outputs. While the best efficiencies have been achieved by vertically stacking solar cells, the fabrication process is technologically. Abstract— This letter reports proof-of-principle demonstration of 3D printable, low-cost, and compact THz spectral splitters based on diffractive optical elements (DOEs) designed to disperse the incident collimated broadband THz radiation (0. 7 THz) at a pre-specified distance. We investigated the use of a surface-relief grating made of dielectric materials for specularly transmitting one part of the solar spectrum while. Spectral splitters, as well as solar concentrators, are commonly designed and optimized using numerical methods. We manage to spatially control white light using a.
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