Advanced Plasmonics
http://aplasmonics.com/An R&D company working on a High Powered Terahertz Source, using Plasmonic resonance
Advanced Plasmonics has developed a new innovative technology based on Plasmon Resonance in nanoantennae. When these nanoantennae are activated, they resonate and produce photons of wavelengths proportional to the design of the resonant structures. Proof of concept has been shown to work in the entire visible spectrum and we are currently investigating the Far Infrared and Terahertz wavelengths.
Angel list: https://angel.co/company/advanced-plasmonics