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Lasing in substituted polythiophene between dielectric mirrors
Linköping University, Department of Physics, Chemistry and Biology, Applied Physics. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Applied Physics. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Applied Physics. Linköping University, The Institute of Technology.ORCID iD: 0000-0001-5154-0291
Chalmers Tekniska Högskola.
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1999 (English)In: Synthetic metals, ISSN 0379-6779, E-ISSN 1879-3290, Vol. 102, no 1-3, 1038-1041 p.Article in journal (Refereed) Published
Abstract [en]

We report photopumped lasing in a microcavity device with a polythiophene layer as emitter. The microcavity is made of a polymer film between two dielectric Bragg reflecting mirrors (DBR). The:microcavity devices is built by joining two polymer coated DBR mirrors at elevated temperature. When photopumping the film,a lasing threshold is observed at 120 nJ/cm(2). Comparative studies with fast pump-probe spectroscopy of thin polythiophene films, and the same polymer in photopumped lasing studies, indicate that the gain coefficient is 80 +/- 20 cm(2) and that the exciton concentration is 2X10(17) cm(2) at the lasing transition, well below the exciton-exciton recombination level.

Place, publisher, year, edition, pages
Elsevier , 1999. Vol. 102, no 1-3, 1038-1041 p.
Keyword [en]
laser; microcavity; photopumped; polymer; polythiophene
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-74868DOI: 10.1016/S0379-6779(98)00227-6ISI: 000081056400084OAI: oai:DiVA.org:liu-74868DiVA: diva2:496811
Available from: 2012-02-10 Created: 2012-02-10 Last updated: 2017-12-07

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Berggren, MagnusInganäs, Olle

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