Abstract:
We use the gain modulation technique to generate giant
pulses in the OK-4/Duke storage ring FEL for
applications requiring high peak power. This technique
provides the increase of the peak power by several
orders of magnitude. It is also very reliable, predictable
and reproducible. The design, the parameters and the
gain modulator performance are described. Comparison of
expected and measured pulse forms is presented.
Application of gain modulator for future harmonic generation
experiments is also discussed.