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

Sönke Klinkhammer, Xin Liu, Klaus Huska, Yuxin Shen, Sylvia Vanderheiden, Sebastian Valouch, Christoph Vannahme, Stefan Bräse, Timo Mappes, Uli Lemmer

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    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
    Volume20
    Issue number6
    Pages (from-to)6357-6364
    ISSN1094-4087
    Publication statusPublished - 2012

    Keywords

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

    Cite this

    Klinkhammer, S., Liu, X., Huska, K., Shen, Y., Vanderheiden, S., Valouch, S., Vannahme, C., Bräse, S., Mappes, T., & Lemmer, U. (2012). Continuously tunable solution-processed organic semiconductor DFB lasers pumped by laser diode. Optics Express, 20(6), 6357-6364.