Observations of frequency upshift in a pulsed free-electron laser amplifier

Journal Article · Thu Jul 01 04:00:00 EDT 1993 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.860780· OSTI ID:5524026

Conde, M E; Taylor, C J; Bekefi, G ^[1]

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1. Research Laboratory of Electronics and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

A new phenomenon, the frequency upshift in a pulsed free-electron laser (FEL) amplifier is reported. The measurement is made in an FEL that uses a mildly relativistic electron beam (750 keV, 90 A, 30 nsec) and is driven by a copropagating electromagnetic wave generated by a 33.39 GHz magnetron source. The frequency upshift is ascribed to the rapid temporal change in the effective dielectric coefficient that can be associated with the FEL interaction.

• OSTI ID: 5524026
• Journal Information: Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 5:7; ISSN 0899-8221; ISSN PFBPEI
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
AMPLIFIERS
BEAM-PLASMA SYSTEMS
BEAMS
ELECTRON BEAMS
ELECTRON TUBES
ELECTRONIC EQUIPMENT
EQUIPMENT
FREE ELECTRON LASERS
FREQUENCY MEASUREMENT
LASERS
LEPTON BEAMS
MAGNETRONS
MICROWAVE EQUIPMENT
MICROWAVE TUBES
PARTICLE BEAMS