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Proceedings Paper

Photophysical and lasing characterization of neat films of 4-methyl-TPD and of a 4-methyl-TPD phenyl substituted MEH-PPV copolymer
Author(s): Wolfgang Holzer; Alfons Penzkofer; R. Philip; Hartwig Tillmann; Cornelia Bader; Hans-Heinrich Hoerhold
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Paper Abstract

Wave-guided travelling-wave lasing (amplification of spontaneous emission in waveguide) is studied on neat films of the triphenylamine dimer 4-methyl-TPD, and of the 4-methyl-TPD phenyl substituted MEH-PPV copolymer TPD(4M)-MEH-P-PPV. Laser action is achieved by transverse pumping neat films on glass substrates with picosecond excitation pulses (wavelength 347.15 nm, duration 35 ps). Lasing occurs at 422 nm for 4-methyl-TPD and at 544 nm for TPD(4M)-MEH-P-PPV. The optical constants (absorption spectra and refractive index spectra), the absorption cross-section spectra, fluorescence quantum distributions, fluorescence quantum yields, and fluorescence lifetimes of the samples are determined for photo-physical characterization. The laser performance and the photo-physical parameters of 4-methyl-TPD and TPD(4M)-MEH-P-PPV are compared with results on MEH-PPV.

Paper Details

Date Published: 17 February 2003
PDF: 9 pages
Proc. SPIE 4833, Applications of Photonic Technology 5, (17 February 2003); doi: 10.1117/12.474834
Show Author Affiliations
Wolfgang Holzer, Univ. Regensburg (Germany)
Alfons Penzkofer, Univ. Regensburg (Germany)
R. Philip, Raman Research Inst. (India)
Hartwig Tillmann, Friedrich-Schiller-Univ. Jena (Germany)
Cornelia Bader, Friedrich-Schiller-Univ. Jena (Germany)
Hans-Heinrich Hoerhold, Friedrich-Schiller-Univ. Jena (Germany)

Published in SPIE Proceedings Vol. 4833:
Applications of Photonic Technology 5
Roger A. Lessard; George A. Lampropoulos; Gregory W. Schinn, Editor(s)

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