Stimulated emission depletion of triplet excitons in a phosphorescent organic laser

Update Item Information
Publication Type Journal Article
School or College College of Science
Department Physics
Creator Lupton, John Mark
Other Author Reufer, M.; Scherf, U.
Title Stimulated emission depletion of triplet excitons in a phosphorescent organic laser
Date 2006
Description Triplet formation is investigated in an optically pumped polymer laser by detecting the phosphorescence emission after excitation. A clear correlation is observed between the onset of lasing and a saturation of phosphorescence intensity due to stimulated emission depletion of the singlet state and the resulting reduction in intersystem crossing. The results are consistent with intersystem crossing constituting the dominant triplet formation pathway in conjugated polymers. Excitation at different wavelengths has no effect on the triplet saturation behavior, which allows the authors to exclude singlet fission or breaking as the origin of triplet formation. The method constitutes an implementation of a highly nondegenerate excitonic switch.
Type Text
Publisher American Institute of Physics (AIP)
Journal Title Applied Physics Letters
Volume 89
Issue 14
First Page 141111
DOI 10.1063/1.2357023
citatation_issn 36951
Subject Triplet excitons; Triplet formation; Emission depletion; Phosphorescent organic laser; Optically pumped polymer laser
Subject LCSH Triplet state; Optical pumping
Language eng
Bibliographic Citation Reufer, M., Lupton, J. M., & Scherf, U. (2006). Stimulated emission depletion of triplet excitons in a phosphorescent organic laser. Applied Physics Letters, 89, 141111.
Rights Management (c)American Institute of Physics. The following article appeared in Reufer, M., Lupton, J. M., & Scherf, U., Applied Physics Letters, 89, 2006 and may be found at http://dx.doi.org/10.1063/1.2357023
Format Medium application/pdf
Format Extent 158,598 bytes
Identifier ir-main,11858
ARK ark:/87278/s67m0sjk
Setname ir_uspace
ID 706839
Reference URL https://collections.lib.utah.edu/ark:/87278/s67m0sjk
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