Abstract
Third-harmonic generation to 1182 Å is reported in a pulsed supersonic jet of xenon. Using a valve equipped with a 1-mm-diameter nozzle and for an incident power of 18 MW at 3547 Å, I have obtained a peak power of 260 W in a 2.9-nsec pulse, corresponding to 4.7 × 1011 photons per pulse and an average power of 7.5 μW at 1182 Å. The measured conversion efficiency is comparable with that in a bulk-gas cell.