Chirping effects accompanying light pulse shortening by nonlinear amplification and saturable absorption

摘要

This paper studies theoretically several mechanisms responsible for light pulse compression in femtosecond dye amplification chains. Compression arising from reshaping of both the intensity profile and the phase of the propagating pulse is investigated. A compression factor of the order of 2 can be achieved only in the case of combined interaction with an amplifier and an absorber.