Abstract
Low energy radio frequency (r.f.) electron beam (e-beam) sources have a potential application as drivers for FELs (free electron lasers) operating in the far-infrared and sub-millimeter (sub-mm) region since they can provide short pulses of coherent radiation in a spectral region not covered by conventional laser sources. A 5 MeV microtron capable of delivering 20 ps bunches with a 4A peak current was utilized at the ENEA (Italian Commission for Nuclear and Alternative Energy Sources) sub-mm FEL facility to drive a Cherenkov free electron laser designed to operate in the spectral region from 100 microns to 2 mm. In this type of device, a beam of relativistic electrons excites TM-like surface waves in a dielectric loaded waveguide when their velocity is close to the phase velocity of the wave in the guide. The longitudinal component of the evanescent electric field causes a bunching of the electrons giving rise to stimulated emission. This paper reports the observation of coherent emission in the microtron driven Cherenkov FEL when power up to 50 W in 4 micron pulses was generated at the wavelengths of 1.6 mm and 0.9 mm by using two different dielectric loaded waveguides. Tunning results obtained by varying the waveguide
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Citation Formats
Ciocci, F, Doria, A, Gallerano, G P, Giabbai, I, Kimmitt, M F, Messina, G, Renieri, A, and Walsh, J E.
Observation of coherent mm wave radiation from microtron driven Cherenkov FEL.
Italy: N. p.,
1991.
Web.
Ciocci, F, Doria, A, Gallerano, G P, Giabbai, I, Kimmitt, M F, Messina, G, Renieri, A, & Walsh, J E.
Observation of coherent mm wave radiation from microtron driven Cherenkov FEL.
Italy.
Ciocci, F, Doria, A, Gallerano, G P, Giabbai, I, Kimmitt, M F, Messina, G, Renieri, A, and Walsh, J E.
1991.
"Observation of coherent mm wave radiation from microtron driven Cherenkov FEL."
Italy.
@misc{etde_10107026,
title = {Observation of coherent mm wave radiation from microtron driven Cherenkov FEL}
author = {Ciocci, F, Doria, A, Gallerano, G P, Giabbai, I, Kimmitt, M F, Messina, G, Renieri, A, and Walsh, J E}
abstractNote = {Low energy radio frequency (r.f.) electron beam (e-beam) sources have a potential application as drivers for FELs (free electron lasers) operating in the far-infrared and sub-millimeter (sub-mm) region since they can provide short pulses of coherent radiation in a spectral region not covered by conventional laser sources. A 5 MeV microtron capable of delivering 20 ps bunches with a 4A peak current was utilized at the ENEA (Italian Commission for Nuclear and Alternative Energy Sources) sub-mm FEL facility to drive a Cherenkov free electron laser designed to operate in the spectral region from 100 microns to 2 mm. In this type of device, a beam of relativistic electrons excites TM-like surface waves in a dielectric loaded waveguide when their velocity is close to the phase velocity of the wave in the guide. The longitudinal component of the evanescent electric field causes a bunching of the electrons giving rise to stimulated emission. This paper reports the observation of coherent emission in the microtron driven Cherenkov FEL when power up to 50 W in 4 micron pulses was generated at the wavelengths of 1.6 mm and 0.9 mm by using two different dielectric loaded waveguides. Tunning results obtained by varying the waveguide gap are also reported.}
place = {Italy}
year = {1991}
month = {Jun}
}
title = {Observation of coherent mm wave radiation from microtron driven Cherenkov FEL}
author = {Ciocci, F, Doria, A, Gallerano, G P, Giabbai, I, Kimmitt, M F, Messina, G, Renieri, A, and Walsh, J E}
abstractNote = {Low energy radio frequency (r.f.) electron beam (e-beam) sources have a potential application as drivers for FELs (free electron lasers) operating in the far-infrared and sub-millimeter (sub-mm) region since they can provide short pulses of coherent radiation in a spectral region not covered by conventional laser sources. A 5 MeV microtron capable of delivering 20 ps bunches with a 4A peak current was utilized at the ENEA (Italian Commission for Nuclear and Alternative Energy Sources) sub-mm FEL facility to drive a Cherenkov free electron laser designed to operate in the spectral region from 100 microns to 2 mm. In this type of device, a beam of relativistic electrons excites TM-like surface waves in a dielectric loaded waveguide when their velocity is close to the phase velocity of the wave in the guide. The longitudinal component of the evanescent electric field causes a bunching of the electrons giving rise to stimulated emission. This paper reports the observation of coherent emission in the microtron driven Cherenkov FEL when power up to 50 W in 4 micron pulses was generated at the wavelengths of 1.6 mm and 0.9 mm by using two different dielectric loaded waveguides. Tunning results obtained by varying the waveguide gap are also reported.}
place = {Italy}
year = {1991}
month = {Jun}
}