The interest for Terahertz (THz) radiation is rapidly growing, both as it is a powerful tool for investigating the behavior of matter at low energy, and as it allows for a number of possible spectroscopic applications spanning from medical science to security. The linac-driven THz source at the SPARC facility can deliver broadband THz pulses with femtosecond shaping and can be used for electron beam diagnostics to fully reconstruct the longitudinal charge distribution. Beyond this application, the possibility to store much more energy in a single THz pulse than table-top sources renders the SPARC THz source very interesting for a spectroscopic use. In addition, taking advantage from electron beam manipulation techniques, high power, narrow-band THz radiation can be also generated. Those source characteristics provide a unique chance to realize THz-pump/THz-probe spectroscopy, a technique practically unexplored up to now.
The THz radiation source at the SPARC facility / Chiadroni, E.; Bacci, A.; Bellaveglia, M.; Castellano, M.; Di Pirro, G.; Ferrario, M.; Gatti, G.; Pace, E.; Rossi, A. R.; Vaccarezza, C.; Calvani, Paolo; Nucara, Alessandro; Nicoletti, Daniele; Limaj, Odeta; Lupi, Stefano; Marchetti, B.; Cianchi, A.; Mostacci, Andrea; Ronsivalle, C.; Perucchi, A.. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6596. - STAMPA. - 359:1(2012), pp. 012018-012018-8. (Intervento presentato al convegno 6th Workshop on Infrared Spectroscopy and Microscopy with Accelerator-Based Sources, WIRMS11 tenutosi a Trieste nel 4 September 2011 through 8 September 2011) [10.1088/1742-6596/359/1/012018].