Free electron laser triggered photo-cathode

E. Sabia, A. Dipace, G. Dattoli

Research output: Contribution to conferencePaper


The possibility of realizing a FEL triggered photocathode has been proposed long time ago and the advantages have been pointed out. In these devices the FEL can be exploited to extract electrons from a photocathode to provide a high quality e-beam. The device becomes even more appealing if photo-thermoionic cathodes can be exploited in two different phases. In the first the electrons are extracted from the cathode working as thermoionic and are used to drive a FEL oscillator, the FEL light is then used to flash the cathode which operates as a photo thermal assisted device. We comment on the possibility of using FEL triggered photocathodes to produce high quality e-beams for SASE or oscillator FEL devices. The use of the same e-beam driving the photocathode and the FEL makes the system naturally free of any synchronization problem arising when an external laser is used. Examples of interplay between the generation of electron and optical bursts are also investigated.
Original languageEnglish
Publication statusPublished - 2006
Externally publishedYes
Event28th International Free Electron Laser Conference, FEL 2006 - , Germany
Duration: 1 Jan 2006 → …


Conference28th International Free Electron Laser Conference, FEL 2006
Period1/1/06 → …


All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Sabia, E., Dipace, A., & Dattoli, G. (2006). Free electron laser triggered photo-cathode. Paper presented at 28th International Free Electron Laser Conference, FEL 2006, Germany.