Mode-locking of long-pulse XeF and KrF lasers

(FWHM). The pulses were much wider than the theoretical limit. This was caused caused by mechanical instability, andthe difficulties of reproducing an exact cavity length of a large, single shot device. Under certain conditions, the changingindex of refraction of the laser medium led to further pulse lengthening.L INTRODUCTIONWe report active mode-locking of KrF and XeF e-beam pumped lasers. To the best of our knowledge, this is the firstdemonstration of active mode-locking of KrF. Additionally, it is the first time an e-beam pumped excimer has been mode