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Metal excinlers have been predicted to be efficient visible laser candidates for manyyears.However,no difinitive gain measurement on these systems has ever been performedbecause of their difficult experimental conditions.Recently,we constructed a pure quartz-molybdenum transverse discharge cell to study Tl-Hg and other metal excimers.Thedischarge tube design was guided by two fundamental considerations:first,the formationof metal excimers depends on three body recombination processes which suggests the ne-cessity of high pressure;secondly,reasonable metal vapor density requires fairly highoperating temperature (～1000℃).A long cathode was made of molybdenum andprofiled according to the Rogowski criteria.Preionization sparks were placed behind amolybdenum screen anode.The entire quartz discharge tube was sealed off and heatedin a pressurized oven to counterbalance the nressure within the dischargc cell We have
Metal excinators have been predicted to be efficient visible laser candidates for many years. However, no difinitive gain measurement on these systems has ever been performedbecause of their difficult experimental conditions. Recently, we constructed a pure quartz-molybdenum transverse discharge cell to study Tl-Hg and other metal excimers. Thedischarge tube design was guided by two fundamental considerations: first, the formation of metal excimers depends on three body recombination processes which suggests the ne-cessity of high pressure; secondly, reasonable metal vapor density requires fairly high operating temperature A long cathode was made of molybdenum and profiled according to the Rogowski criteria. Preionization sparks were placed behind amolybdenum screen anode. The entire quartz discharge tube was sealed off and heated in a pressurized oven to counterbalance the nressure within the dischargc cell We have