Photophysical and lasing characterization of neat films of 4-methyl-TPD and of a 4-methyl-TPD phenyl substituted MEH-PPV copolymer

Wolfgang Holzer; Alfons Penzkofer; R. Philip; Hartwig Tillmann; Cornelia Bader; Hans-Heinrich Hoerhold

doi:10.1117/12.474834

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17 February 2003 Photophysical and lasing characterization of neat films of 4-methyl-TPD and of a 4-methyl-TPD phenyl substituted MEH-PPV copolymer

Wolfgang Holzer, Alfons Penzkofer, R. Philip, Hartwig Tillmann, Cornelia Bader, Hans-Heinrich Hoerhold

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Proceedings Volume 4833, Applications of Photonic Technology 5; (2003) https://doi.org/10.1117/12.474834
Event: Applications of Photonic Technology 5, 2002, Quebec City, Canada

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.

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Wolfgang Holzer, Alfons Penzkofer, R. Philip, Hartwig Tillmann, Cornelia Bader, and Hans-Heinrich Hoerhold "Photophysical and lasing characterization of neat films of 4-methyl-TPD and of a 4-methyl-TPD phenyl substituted MEH-PPV copolymer", Proc. SPIE 4833, Applications of Photonic Technology 5, (17 February 2003); https://doi.org/10.1117/12.474834

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