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Lead-laser operation has been demonstrated at 7229 Å in all-hot sealed-off quartz discharge tubes for 50-h cumulative operating times without tube degradation or failure. The maximum output energy of 230 μJ or 2.0 μJ cm−3 was obtained at ∼1.5 kHz, and the discharge efficiency was 0.12%. Average-power levels of 750 mW at 6 kHz were maintained under burst mode excitation conditions for extended periods at temperatures of ∼1050 °C. Lead-laser emission at ∼500 °C was also obtained using lead iodide as the starting material.
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Feldman et al. (1978) studied this question.
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