Title :
Amplification of picosecond pulses in a 140 GHz gyro-TWT
Author :
Nanni, Emilio A. ; Kim, Hae J. ; Shapiro, Michael A. ; Woskov, Paul P. ; Temkin, Richard J.
Author_Institution :
Plasma Sci. & Fusion Center, MIT, Cambridge, MA, USA
Abstract :
We report amplification of pulses as short as 400 ps in a 1 kW, 140 GHz gyro-TWT amplifier. To our knowledge, this is the first observation of picosecond pulse amplification in a gyro-amplifier. The pulses show measurable broadening due to two distinct phenomena: group velocity dispersion and spectral narrowing due to the finite gain bandwidth. Theoretical analysis is in good agreement with the observed broadening of the pulses. Picosecond pulses are useful for applications in spectroscopy and advanced radar.
Keywords :
gyrotrons; millimetre wave amplifiers; travelling wave tubes; frequency 140 GHz; gyro-TWT; gyro-amplifier; picosecond pulse amplification; power 1 kW; time 400 ps; Dispersion; Electron beams; Equations; Gain; Mathematical model; Nuclear magnetic resonance; Optical waveguides;
Conference_Titel :
Infrared Millimeter and Terahertz Waves (IRMMW-THz), 2010 35th International Conference on
Conference_Location :
Rome
Print_ISBN :
978-1-4244-6655-9
DOI :
10.1109/ICIMW.2010.5613027
