Calculated Performance Of Near-Millimeter Free-Electron-Laser Amplifiers Including Effects Of Electron Beam Velocity Spread

V. L. Granatstein; M. C. Wang; B. Levush

doi:10.1117/12.951714

2 June 1989 Calculated Performance Of Near-Millimeter Free-Electron-Laser Amplifiers Including Effects Of Electron Beam Velocity Spread

V. L. Granatstein, M. C. Wang, B. Levush

Author Affiliations +

Proceedings Volume 1059, Space Sensing, Communications, and Networking; (1989) https://doi.org/10.1117/12.951714
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

Abstract

The feasibility of developing a practical amplifier in the 'Optical' Klystron configuration at a wave-length of 2 mm has been investigated. The effect of beam velocity spread on the efficiency and gain of the 'Optical' Klystron was calculated. Greater sensitivity to beam velocity spread was found for three cavities than for two cavities. The efficiency was reduced to one-third of its cold beam value when axial energy spread Δ_γ/_γ0 = 5.5 x 10^-4 for three cavities, 6.7 x 10^-4 for two cavities, and 2.8 x 10^-3 for a single-cavity free electron laser. However, it is estimated that even for the case of three cavities, electron beams of suitable quality might be achievable.

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V. L. Granatstein, M. C. Wang, and B. Levush "Calculated Performance Of Near-Millimeter Free-Electron-Laser Amplifiers Including Effects Of Electron Beam Velocity Spread", Proc. SPIE 1059, Space Sensing, Communications, and Networking, (2 June 1989); https://doi.org/10.1117/12.951714

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