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Luminescent Polymer Fibers for Light Amplification and Lasing

Published online by Cambridge University Press:  21 March 2011

Takeyuki Kobayashi
Affiliation:
Materials Ireland Polymer Research Centre, Department of Physics, Trinity College Dublin, Dublin 2, Ireland
Werner J. Blau
Affiliation:
Materials Ireland Polymer Research Centre, Department of Physics, Trinity College Dublin, Dublin 2, Ireland
Hartwig Tillmann
Affiliation:
Institut für Organische Chemie und Makromolekulare Chemie, Friedrich-Schiller-Universität Jena, Humboldtstraße 10, D-07743, Jena, Germany
Hans-Heinrich Härhold
Affiliation:
Institut für Organische Chemie und Makromolekulare Chemie, Friedrich-Schiller-Universität Jena, Humboldtstraße 10, D-07743, Jena, Germany
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Abstract

We report on the fabrication of step index polymer optical fibers that use a novel conjugated polymer and fluorescent stilbenoid compounds for lasing and amplification applications in the blue-green regions. The green-emitting polymer, Thianthrene-MEH-PPV, and the blue-emitting compounds, 1,2-bis(4-diphenylaminophenyl)-ethylene and 1,4-bis(4-diphenylamino-styryl)-benzene, are designed for the blue-green region of the spectrum and have very high quantum yields and large Stokes shifts. Significant spectral narrowing and superlinear increase of output intensity are observed under photoexcitation at 355 nm, which are indicative of the occurrence of amplified spontaneous emission. By gain spectroscopy, a high gain coefficient of 36 cm−1 at 494 nm has been obtained for the 1,4-bis(4-diphenylamino-styryl)-benzene-doped fiber when it is transversely photoexcited at 12 mJ/cm2.

Type
Research Article
Copyright
Copyright © Materials Research Society 2001

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References

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