Broadband optical gain via interference in the free electron laser: principles and proposed realizations
arXiv:physics/0105044 · doi:10.1103/PhysRevE.64.026501
Abstract
We propose experimentally simplified schemes of an optically dispersive interface region between two coupled free electron lasers (FELs), aimed at achieving a much broader gain bandwidth than in a conventional FEL or a conventional optical klystron composed of two separated FELs. The proposed schemes can {\it universally} enhance the gain of FELs, regardless of their design when operated in the short pulsed regime.