Abstract
We report the results of experiments on quasi-longitudinal pumping of a polymer dye laser by two green ( λ = 513 nm) pulsed laser diodes. The lasing thresholds, efficiency, and photostability of pyrromethenes in various polymers are studied. The efficiency of dye lasers based on pyrromethene 567 and pyrromethene 580 with a three-mirror cavity with partial astigmatism compensation exceeds 20 %.
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