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Proceedings Paper

Optical spectroscopy with organic semiconductor lasers
Author(s): Sönke Klinkhammer; Thomas Woggon; Christoph Vannahme; Ulf Geyer; Timo Mappes; Uli Lemmer
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Paper Abstract

We report on the fabrication of large-scale surface gratings by laser interference lithography and reactive ion etching on which we evaporated a thin film of the organic semiconductor tris(8-hydroxyquinoline) aluminum doped with the laser dye 4-dicyanomethylene-2-methyl-6-(p-dimethylaminostyril)-4H-pyrane. We created a thickness gradient by using a rotating shadow mask evaporation technique. This allowed us to continuously tune the emission wavelength from 606 nm to 661 nm on a single substrate. After encapsulation, we demonstrated the usefulness of such low-cost and tunable organic semiconductor lasers by conducting simple fluorescence excitation and transmission spectroscopy measurements using a minimal amount of additional optical components.

Paper Details

Date Published: 18 May 2010
PDF: 10 pages
Proc. SPIE 7722, Organic Photonics IV, 77221I (18 May 2010); doi: 10.1117/12.854785
Show Author Affiliations
Sönke Klinkhammer, Karlsruhe Institute of Technology (Germany)
Thomas Woggon, Karlsruhe Institute of Technology (Germany)
Christoph Vannahme, Karlsruhe Institute of Technology (Germany)
Ulf Geyer, Karlsruhe Institute of Technology (Germany)
Christian-Albrechts-Univ. Kiel (Germany)
Timo Mappes, Karlsruhe Institute of Technology (Germany)
Uli Lemmer, Karlsruhe Institute of Technology (Germany)

Published in SPIE Proceedings Vol. 7722:
Organic Photonics IV
Paul L. Heremans; Reinder Coehoorn; Chihaya Adachi, Editor(s)

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