3D printable compact THz spectral splitters via inverse design

Autor: Yu Shi, Sourangsu Banerji, Yong Lin Kong, Vivian Song-En Su, Berardi Sensale-Rodriguez, Palal Ghosh, Lei Liu, Jacqueline Cooke
Rok vydání: 2020
Předmět:
Zdroj: Terahertz Emitters, Receivers, and Applications XI.
Popis: In this work, we experimentally demonstrate a 3D printed compact THz spectral splitter based on a single planar broadband diffractive optical element, designed to disperse an incident collimated THz beam (0.5 THz to 0.7 THz) designed with the help of an inverse design technique namely gradient descent assisted binary search algorithm. Aside from the current challenges associated with 3D printing and better measurement facilities, preliminary experimental demonstration highlights the fact that these computationally optimized free space devices could be a significant step towards enabling new types of compact THz spectral splitters or even splitters operating beyond the THz regime.
Databáze: OpenAIRE