Swept-Excited Amplifiers and Fluctuations and Correlations in Cooperative Processes

摘要

We have studied Optical Bistability, Josephson Junctions, Superfluorescence and Free Electron Lasers (FEL) obtaining many original results as described in the final report and in the list of publications. In particular as announced in the last part of our report we have very recently obtained the first theoretical evidence of the possibility of high intensity, chaotic collective spiking behaviour of a FEL for high enough electron density and strong enough magnetic wiggler field. This is described in the included unpublished preprint. (Author)