We have obtained a new kind of light source, coherent transition radiation, using linear accel- erators and have examined its properties. It will be useful for IR and MM wave spectroscopy owing to its continuous spectrum and its picosecond duration. It will also be useful for analysis of a bunch shape of charged particles.
M. Ikezawa, M. Ikezawa,
"Coherent transition radiation", Proc. SPIE 1929, 17th International Conference on Infrared and Millimeter Waves, 192904 (14 December 1992); doi: 10.1117/12.2298121; https://doi.org/10.1117/12.2298121