Rapid bleaching of Rhodamine 6G and several other dyes has been observed in capillary-guide liquid lasers longitudinally pumped atλ = 5145Å. This bleaching appears to be permanent and is shown to present a severe limitation to the operation of nonflowing continuously excited dye lasers. The rate of bleaching has been measured under a variety of conditions and is found to vary linearly with pump power, independent of geometry.
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Ippen et al. (1971) studied this question.
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