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 language | English |
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Pages (from-to) | 1759 |
Number of pages | 1759 |
Journal | Synthetic Metals |
Volume | 121 |
Publication status | Published - 15 Mar 2001 |
Keywords
- conjugated polymer
- MEH-PPV
- laser
- spectral line narrowing
- waveguiding