Title :
The European project OPTHER for the development of a THz tube amplifier
Author :
Carlo, A. Di ; Paoloni, C. ; Brunetti, F. ; Terranova, M.L. ; Durand, A. ; Marchesin, R. ; Pham, K. ; Krozer, V. ; Fiorello, A. ; Dispenza, M. ; Pribat, D. ; Megtert, S. ; Schnell, J.P. ; Guiset, P. ; Legagneux, P. ; Dolfi, D. ; De Rossi, A.
Author_Institution :
Dept. of Electron. Eng., Univ. of Rome Tor Vergata, Rome, Italy
Abstract :
The European project OPTHER - Optically Driven THz Amplifiers, is focused on the realization of a THz amplifier. This device aims to overcome the actual limitations of THz sources in terms of emitted power, opening the way to the use of THz in monitoring security systems. Two alternative schemes are under study for amplification. In the first one (THz drive signal amplifier) the continuous wave electron beam emitted by the CNT cathode is modulated by the electric field in the interaction structure driven by a THz signal (generated by QCL or laser mixing). In the second one (optically modulated beam THz amplifier), the CNT cathode emits bunches of electrons at the THz rate. Those bunches are transmitted to the interaction structure and generate the amplified output signal.
Keywords :
millimetre wave amplifiers; millimetre wave tubes; CNT cathode; European project OPTHER; QCL; THz drive signal amplifier; THz sources; THz tube amplifier; continuous wave electron beam emitted; electric field; laser mixing; optically driven THz amplifiers; optically modulated beam THz amplifier; security systems; Cathodes; Electron beams; Optical amplifiers; Optical beams; Optical mixing; Optical modulation; Quantum cascade lasers; Semiconductor optical amplifiers; Signal generators; Stimulated emission; THz; Travelling Wave Tube; Vacuum Amplifier;
Conference_Titel :
Vacuum Electronics Conference, 2009. IVEC '09. IEEE International
Conference_Location :
Rome
Print_ISBN :
978-1-4244-3500-5
Electronic_ISBN :
978-1-4244-3501-2
DOI :
10.1109/IVELEC.2009.5193372
