Continuously tunable solution-processed organic semiconductor DFB lasers pumped by laser diode.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

  • Author: Klinkhammer, Sönke, Germany

    Light Technology Institute, Karlsruhe Institute of Technology, Germany

  • Author: Liu, Xin, Germany

    Light Technology Institute, Karlsruhe Institute of Technology, Germany

  • Author: Huska, Klaus, Germany

    Light Technology Institute, Karlsruhe Institute of Technology, Germany

  • Author: Shen, Yuxin, Germany

    Light Technology Institute, Karlsruhe Institute of Technology, Germany

  • Author: Vanderheiden, Sylvia, Germany

    Institute for Organic Chemistry, Karlsruhe Institute of Technology, Germany

  • Author: Valouch, Sebastian, Germany

    Light Technology Institute, Karlsruhe Institute of Technology, Germany

  • Author: Vannahme, Christoph

    Department of Micro- and Nanotechnology, Technical University of Denmark, Denmark

  • Author: Bräse, Stefan, Germany

    Institute for Organic Chemistry , Karlsruhe Institute of Technology, Germany

  • Author: Mappes, Timo, Germany

    Institute of Microstructure Technology, Karlsruhe Institute of Technology , Germany

  • Author: Lemmer, Uli, Germany

    Light Technology Institute, Karlsruhe Institute of Technology, Germany

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The fabrication and characterization of continuously tunable, solution-processed distributed feedback (DFB) lasers in the visible regime is reported. Continuous thin film thickness gradients were achieved by means of horizontal dipping of several conjugated polymer and blended small molecule solutions on cm-scale surface gratings of different periods. We report optically pumped continuously tunable laser emission of 13 nm in the blue, 16 nm in the green and 19 nm in the red spectral region on a single chip respectively. Tuning behavior can be described with the Bragg-equation and the measured thickness profile. The laser threshold is low enough that inexpensive laser diodes can be used as pump sources.
Original languageEnglish
JournalOptics Express
Publication date2012
Volume20
Journal number6
Pages6357-6364
ISSN1094-4087
StatePublished

Keywords

  • Lasers, distributed-feedback, Visible lasers, Polymer active devices
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