Share Email Print
cover

Proceedings Paper

Observation of frequency chirping and phase of a free-electron laser amplifier
Author(s): Kenneth N. Ricci; George Bekefi; Brian Chen; Manoel E. Conde; Ivan Mastovsky; Colin J. Taylor; P. Volfbeyn
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We report observations of frequency chirping and phase of a free electron laser amplifier operating in the Raman regime. The FEL is driven by a mildly relativistic electron beam (750 kV, 25 ns) subjected to a combined axial magnetic field and a helical wiggler field. The input into the FEL amplifier is provided by a high power magnetron tuned to a frequency of 33.39 GHz. Phase and frequency shifts are measured both as a function of time and interaction length. It is found that in the Group I regime of FEL operation the output frequency is upshifted by approximately 100 MHz, but smaller upshifts are observed in the Group II or the reversed field configurations.

Paper Details

Date Published: 13 May 1994
PDF: 13 pages
Proc. SPIE 2154, Intense Microwave Pulses II, (13 May 1994); doi: 10.1117/12.175766
Show Author Affiliations
Kenneth N. Ricci, Massachusetts Institute of Technology (United States)
George Bekefi, Massachusetts Institute of Technology (United States)
Brian Chen, Massachusetts Institute of Technology (United States)
Manoel E. Conde, Massachusetts Institute of Technology (United States)
Ivan Mastovsky, Massachusetts Institute of Technology (United States)
Colin J. Taylor, Massachusetts Institute of Technology (United States)
P. Volfbeyn, Massachusetts Institute of Technology (United States)


Published in SPIE Proceedings Vol. 2154:
Intense Microwave Pulses II
Howard E. Brandt, Editor(s)

© SPIE. Terms of Use
Back to Top