Tuneability of the ASE in thin organic films

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17 Citations (Scopus)

Abstract

We show that the amplified spontaneous emission (ASE) in poly[2-methoxy, 5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) can be tuned by controlling the film thickness and the excitation intensity, For sufficiently thin films the peak position of the ASE is determined by the cut-off wavelength for the waveguide and is shifted to shorter wavelengths with decreasing film thickness. Increasing excitation intensity causes a blue-shift of the emission spectra, We also show that excitation wavelength has no effect on the position of the ASE.

Original languageEnglish
Pages (from-to)1759
Number of pages1759
JournalSynthetic Metals
Volume121
Publication statusPublished - 15 Mar 2001

Keywords

  • conjugated polymer
  • MEH-PPV
  • laser
  • spectral line narrowing
  • waveguiding

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