The electra KRF laser system

This paper presents a brief overview of the Electra laser system and reports on the most recent results. The laser system consists of an electron beam pumped main amplifier with an aperture of 30×30 cm
²
, an e-beam pumped 10×10 cm
²
pre-amplifier, and a KrF discharge laser serving as the seed oscillator. Full laser system shots have been completed with laser energies of 452 J. In addition, 25,000 continuous shots at 2.5 Hz from a single sided diode into laser gas have been achieved with the main amplifier operating as an oscillator.