Study of spontaneous and stimulated emission of various solutions of 4-methylumbelliferone

A. Bergman*, J. Jortner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper we present the results of an experimental study of laser action and of spontaneous and stimulated emissions of 4-methylumbelliferone (4MU) solutions excited by the second harmonic of a Q switched ruby laser. Two singly and one doubly protonated exciplexes of 4MU have been identified and an intramolecular interconversion mechanism between the two singly protonated exciplexes is proposed. Two simultaneous laser actions have been observed and their relative intensities can be controlled by chemical (concentration) and physical (pumping power) means.

Original languageEnglish
Pages (from-to)390-403
Number of pages14
JournalJournal of Luminescence
Volume6
Issue number5
DOIs
StatePublished - Aug 1973

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