Coherent, tuned terahertz photons from nonlinear processes in graphene

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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.