Conversion from 3371 to 1124 A by nonresonant optical frequency tripling in compressed krypton gas.
The 1-MW 3-nsec output from a commercial nitrogen laser has been frequency tripled in krypton to generate vacuum-ultraviolet 1124-A radiation. Conversion efficiencies of up to 10(-6) and optimum krypton gas pressures as high as 4-5 atm were found. Preliminary experiments using a para-terphenyl dye laser have yielded tunable radiation in the 1116-1165-A region.
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