抄録
In this paper the generation of ultrashort light pulses with Cerenkov radiation (CR) is reviewed. We discuss the pulse width of CR from a point-charged particle, and introduce a technique of pulse compression using conical and cylindrical gratings. It is shown theoretically that subfemtosecond pulses can be generated with this CR compression technique. To increase the intensity of coherent CR pulses, a bunched pulse electron beam containing a large number of electrons is useful. A system of intense far-infrared monocycle pulse generation from a photoelectron beam pulse is also introduced. This system can be used to generate megawatt, femtosecond pulses.
