The 28-nm laser damage testing of LIF

Samples of LIF, both single crystal and press forged were tested for damage resistance to 10 ns 248 nm pulses at 35 pps. The damage thresholds the highest levels at which no damage could be produced - ranged from 4 to 6 J/sq cm although some test sites survived irradiation at approximately 30 J/sq cm. Bulk damage is the primary failure mechanism in sngle crystal and press forged samples and both samples exhibit the same resistance to laser damage.