3-Substituierte Umbelliferone: Eine Gruppe blau emittierender, photostabiler und leicht pumpbarer Laserfarbstoffe
作者： Otto S. Wolfbeis , Werner Rapp , Ernst Lippert
DOI: 10.1007/BF00907310
关键词: Lasing threshold 、 Organic chemistry 、 Aqueous solution 、 Water soluble 、 Chemistry 、 Dye laser 、 Coumarin
摘要: Umbelliferones (7-hydroxycoumarines) having phenyl-, ethoxycarbonyl-, cyano- or benzothiazolyl substituents in 3-position are excellent and water soluble laser dyes, emitting the 440 to 525 nm region, when pumped with a frequency tripledQ-switch Nd3+-laser. In carefully adjusted slightly alkaline aqueous solutions, wherein dyes readily soluble, particular good lasing performance is observed without any photodecomposion of coumarin.
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