In this paper, a possible way to achieve lasing from THz extreme UV domain due stimulated scattering of graphene plasmons on the free electrons is considered. The analytical-quantitative description proposed FEL scheme based self-consistent set Maxwell--Vlasov equations. We study downconversion as well upconversion. It shown that coherent infrared radiation one can be achieved using source very...

Free-electron radiation results from the interaction between swift electrons and local electromagnetic environment. Recent advances in material technologies provide powerful tools to control light emission free may facilitate many intriguing applications of free-electron particle detections, lasers, quantum information processing, etc. Here, we a brief overview on recent theoretical development...