Inverse Designed THz Spectral Splitters
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 (0.5 THz - 0.7 THz) at a pre-specified distance. Via inverse design, we show that it is possible to design such a diffractive optic, which can split the broadband incident spectrum in any desired fashion, as is evidenced from both FDTD simulations and measured intensity profiles using a 500-750 GHz VNA. Due to its straightforward construction without the usage of any movable parts, our approach, in principle, can have various applications such as in portable, low-cost spectroscopy as well as in wireless THz communication systems as a THz demultiplexer.
Cite
@article{arxiv.2011.06371,
title = {Inverse Designed THz Spectral Splitters},
author = {Sourangsu Banerji and Yu Shi and Vivian Song-En Su and Udayan Ghosh and Jacqueline Cooke and Yong Lin Kong and Lei Liu and Berardi Sensale-Rodriguez},
journal= {arXiv preprint arXiv:2011.06371},
year = {2024}
}
Comments
This work has been submitted to the IEEE for possible publication