Observation of Stimulated Transition Radiation

Stimulated coherent transition radiation

“…This coincidence of light pulses with electron bunches enables the light to do work on the electrons, thus; stimulates more radiated energy. The stimulation of radiation is observed through detuning measurements of the cavity and agrees with theoretical predictions [52]. Following this observation, different cavity designs to produce high-intensity radiation in multipulsed and fast Q-switched modes will be discussed.…”

Stimulated transition radiation in the far-infrared

“…The extra energy is the stimulated radiation which is due to the work done by the external field on the electrons [3]. STR has been observed at SUNSHINE.…”

“…Fig.4 shows the available radiation energy in units of spontaneous TR as electron bunches pass through the cavity for an optimized BS reflection coefficient R=0.24. The total STR energy per macropulse is 5.07×10 4 …”

“…To obtain stimulated transition radiation (STR), we recycle the TR from one bunch by mirrors such that the radiation pulse arrives back at the radiator just in time when another electron bunch arrives there as well [3]. The recycled radiation pulse serves now as an external field E ex .…”

“…STR has been observed at SUNSHINE. [3,4] by measuring the radiation intensity as a function of the cavity length. STR is observed at cavity lengths matched to the stimulating condition.…”