MICROSTRUCTURED MATERIALS, SYSTEMS AND METHODS FOR MODULATING Smith-PUSH RADIATION

The invention provides a microstructure material for modulating Smith-Purcell radiation, which mainly comprises a substrate and a nanorod array formed on the substrate, and the nanorod array comprises a plurality of nanorod structures arranged periodically; the arrangement period of the nano columns is 100 to 1000 nm; the nanorod array is further constructed in the mode that when the electron beams sweep across the surface of the nanorod array in parallel, Smith-Purcell radiation can be excited, and the wavelength of Smith-Purcell radiation light waves is modulated by changing the included angle between the electron beams and the nanorod array. Furthermore, the invention also provides a corresponding system and method. According to the invention, electron beams can be moved in any direction on a plane parallel to the surface of the two-dimensional particle array in the microstructure material to generate Smith-Peltier radiation, and the Smith-Peltier radiation can be simply, flexibly and dynamically modulated