Abstract
Threshold solar power for dye laser pumping has been determined by measuring the gain of a rhodamine 6G dye laser amplifier at various solar-simulated irradiances on an amplifier cell. The measured threshold was 20 000 solar constants (2.7 kW/cm2) for the dye volume of 2×5×40 mm3 and the optimum dye concentration of 1×10−3 M. The threshold is about one-third of that achievable with a high-intensity solar concentrator.
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