Inverse Designed THz Spectral Splitters
| Autor: | Lei Liu, Jacqueline Cooke, Yu Shi, Sourangsu Banerji, Vivian Song-En Su, Berardi Sensale-Rodriguez, Yong Lin Kong, Udayan Ghosh |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Demultiplexer business.industry Terahertz radiation Finite-difference time-domain method FOS: Physical sciences 020206 networking & telecommunications 02 engineering and technology Applied Physics (physics.app-ph) Physics - Applied Physics Condensed Matter Physics Communications system Light scattering Collimated light Optics Broadband 0202 electrical engineering electronic engineering information engineering Time domain Electrical and Electronic Engineering business Optics (physics.optics) Physics - Optics |
| Popis: | 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. This work has been submitted to the IEEE for possible publication. Copyright may be transferred without notice, after which this version may no longer be accessible |
| Databáze: | OpenAIRE |
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