Dynamics of a high-Q vertical-cavity organic laser

  • Koschorreck M
  • Gehlhaar R
  • Lyssenko V
 et al. 
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We investigate the dynamics of the organic laser guest-host composite of tris-(8-hydroxy quinoline) aluminium and 4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran embedded in a high-Q (Q \approx 4500) double distributed Bragg reflector microcavity using subpicosecond up-conversion techniques. Lasing is observed at a threshold of 0.4 nJ/20 \textgreek{m}J cm-2 with a linewidth of 0.05 nm (resolution limit). We observe a strongly nonlinear intensity-dependent delay of the emitted radiation burst. All experimental results are successfully modeled by a set of nonlinear rate equations, emphasizing the importance of a feedback mechanism for lasing.

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  • M. Koschorreck

  • R. Gehlhaar

  • V. G. Lyssenko

  • M. Swoboda

  • M. Hoffmann

  • K. Leo

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