Long-pulse millimeter-wave free-electron laser and cyclotron autoresonance maser experiments

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.860201· OSTI ID:7291177

Danly, B G; Hartemann, F V; Chu, T S; Legorburu, P; Menninger, W L; Temkin, R J ^[1]; Faillon, G; Mourier, G ^[2]

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1. Plasma Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
2. Thomson Tubes Electroniques, Velizy (France)

Experimental results on high-power long-pulse free-electron laser (FEL) and cyclotron autoresonance maser (CARM) experiments are summarized. Single-mode operation of a free-electron laser oscillator at 27.4 GHz with a Bragg resonator has been obtained, with an output power of 990 kW for a beam energy of 320 keV and transmitted current of 30 A, corresponding to an efficiency of 10.3%. Free-electron maser (FEM) amplifier operation at 35 GHz has yielded a gain of 26 dB with an output power of 800 kW, corresponding to an efficiency of 8.6%. CARM oscillator experiments at 32 GHz with a different electron gun have yielded lower powers because of poor beam quality; planned CARM experiments are discussed.

• DOE Contract Number: FG02-89ER14052
• OSTI ID: 7291177
• Journal Information: Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 4:7; ISSN 0899-8221; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
AMPLIFIERS
BEAM INJECTION
BEAMS
CYCLOTRON RESONANCE
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
ELECTRONIC EQUIPMENT
EQUIPMENT
FREE ELECTRON LASERS
LASERS
LEPTON BEAMS
MASERS
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
MICROWAVE RADIATION
OSCILLATORS
PARTICLE BEAMS
RADIATIONS
RELATIVISTIC BEAM INJECTION
RESONANCE
RESONATORS