STUDIES OF AN 80-J KRF OSCILLATOR AT EXCITATION RATES OF 2-7 MW-CM3

We have examined the performance of a 2-liter KrF oscillator pumped by a high-intensity electron beam. For input pump rates of 7 MW/cm3, up to 80 J of laser energy is extracted from the cavity in 50 ns with an efficiency (laser energy divided by deposited electron-beam energy) of 11%. Values of the small-signal-gain length product g0L, the absorption length product αL, and the saturation intensity Is were determined to be 6-16, 0.3-0.6, and 1-10 MW/cm2, respectively.