Coherent, tuned terahertz photons from nonlinear processes in graphene

该项目旨在开发一种低成本、可调谐、高效和相干的太赫兹光源。虽然大部分电磁频谱都是常用的，但太赫兹区域的频率高于电子和无线电波，但低于光子和可见光，仍然相对未被开发。今天，该领域最大的挑战仍然是辐射源。本项目旨在开发一种基于石墨烯及其同源材料中强非线性光学过程的新型太赫兹源。它提出了直接转换的表面等离子体极化激元太赫兹光子。高效率的太赫兹辐射源将大大扩大太赫兹技术在科学、医学、工业和国防中的应用。

The project aims is to develop a low cost, tunable, efficient and coherent source of terahertz light. While much of the electromagnetic spectrum is in common use, the terahertz region, lying in frequency above electronics and radio waves but below photonics and visible light, is still relatively unexploited. Today the biggest challenge in the field remains the radiation source. This project aims to develop a new type of terahertz source based on strong nonlinear optical processes in graphene and cognate materials. It proposes the direct transformation of the surface plasmon polariton to terahertz photons. A high efficiency terahertz radiation source would significantly expand the use of terahertz technology in science, medicine, industry and defence.