INCREASED LASER OUTPUT ENERGY AND AVERAGE POWER AT WAVELENGTHS BELOW 35nm

摘要

Saturated tabletop lasers having increased output energy and operating at 5 Hz repetition rate, were demonstrated at wavelengths about 18.9 nm for a molybdenum target, 16.4 nm for a ruthenium target, 14.7 nm for a palladium target, 13.9 nm for a silver target, and 13.2 nm for a cadmium target in transitions of nickel-like ions. The results were obtained using a sequence of two, plasma-generating pre-pulses, each having sub-Joule energy followed after a selected delay period by picosecond laser plasma excitation pulse having an energy of about 1 J at angles of incidence optimized for maximum energy deposition.