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A continuously tunable low-threshold organic semiconductor distributed feedback laser fabricated by rotating shadow mask evaporation

Applied Physics B volume 97, pages 787–791 (2009)Cite this article

Abstract

We report on an organic semiconductor distributed feedback laser with a continuously tunable wavelength from 621 to 657 nm on a single sample with thresholds as low as 38 μJ/cm2. Using laser interference lithography and reactive ion etching, we textured a glass substrate with a one-dimensional second-order Bragg surface grating. Optical confinement and gain is provided by a wedge-shaped layer of the organic semiconductor tris(8-hydroxyquinoline) aluminum doped with the laser dye 4-dicyanomethylene-2-methyl-6-(p-dimethylaminostyril)-4H-pyrane, which is fabricated by a rotating shadow mask evaporation. This allows for a simple, broadband continuous tuning of the laser emission wavelength.

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Authors and Affiliations

  1. Light Technology Institute and Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology, 76128, Karlsruhe, Germany

    S. Klinkhammer, T. Woggon, U. Geyer, C. Vannahme & U. Lemmer

  2. Institute for Microstructure Technology, Karlsruhe Institute of Technology, 76128, Karlsruhe, Germany

    S. Klinkhammer, C. Vannahme & T. Mappes

  3. Institute of Nanotechnology, Karlsruhe Institute of Technology, 76344, Eggenstein-Leopoldshafen, Germany

    S. Dehm

Authors
  1. S. Klinkhammer
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  2. T. Woggon
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  3. U. Geyer
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  4. C. Vannahme
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  5. S. Dehm
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  6. T. Mappes
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  7. U. Lemmer
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Correspondence to S. Klinkhammer.

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Klinkhammer, S., Woggon, T., Geyer, U. et al. A continuously tunable low-threshold organic semiconductor distributed feedback laser fabricated by rotating shadow mask evaporation. Appl. Phys. B 97, 787–791 (2009). https://doi.org/10.1007/s00340-009-3789-0

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  • DOI: https://doi.org/10.1007/s00340-009-3789-0

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