Laser emission of hydrogen-bond complexes of 7-diethylamino-4-methylcoumarin

Krashakov, S. A.; Akimov, A. I.; Korol’kova, N. V.; Denisov, L. K.; Uzhinov, B. M.

doi:10.1007/bf00661291

Cited by 3 publications

(1 citation statement)

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“…Recently, several 7-aminocoumarin laser dyes, e.g. coumarin 1 (Krashakov et al 1984;Masilamani et al 1986;Korol'kova et al 1987;Yip and Wen 1991), coumarin 2 (Masilamani et al 1987), coumarin 440 (Ramalingam et al 1989), coumarin 485 (Mohan et al 1991), coumarin 35 (Sastikumar and Masilamani 1995) and coumarin 102 (Sastikumar and Masilamani 1995), have been found to exhibit two ASE bands in certain solvents under pulsed laser excitation. The important feature is that they exhibit only one fluorescence maximum which corresponds to the shorter wavelength ASE band.…”

Section: Introductionmentioning

confidence: 99%

Influence of solvents on amplified spontaneous emission characteristics of 7-diethylamino-4-methylcoumarin

Sastikumar

Masilamani

1997

Proc. Indian Acad. Sci. (Chem. Sci.)

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7-Diethylamino-4-methylcoumarin (coumarin 1) exhibits two amplified spontaneous emission (ASE) bands in certain solvents under pulsed laser excitation though there is only one maximum in the fluorescence spectrum. In some solvents, it exhibits only one ASE band corresponding to the fluorescence maximum, while in other solvents, the ASE band is largely red-shifted from this maximum. These laser characteristics were studied in various solvents and also in binary solvent mixtures. The study shows that the above characteristics of coumarin 1 are due to the formation of a new type of emitting species under pulsed laser excitation and that this depends upon the properties of the solvent.

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