Photoexcitations in luminescent conjugated polymers

Arthur Dogariu, Dan Vacar, Alan J. Heeger

Research output: Contribution to conferencePaperpeer-review


Using ultrafast time-delayed pump-probe measurements, the mechanisms leading to stimulated emission (SE) and photoinduced absorption (PA) in thin films and solution of poly[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylenevinylene] are studied. The change in the excited-state spectra is monitored by means of femtosecond time-resolved nonlinear spectroscopy in order to identify the SE and PA spectral regions and their time evolution. Femtosecond gain-narrowing measurements and the influence of the PA on the photoluminescence spectra are also presented. Bimolecular interaction at high excitation densities and independence of the PA and SE dynamics on the pump wavelength are demonstrated.

Original languageEnglish (US)
Number of pages2
StatePublished - 1998
Externally publishedYes
EventProceedings of the 1998 Conference on Lasers and Electro-Optics, CLEO - San Francisco, CA, USA
Duration: May 3 1998May 8 1998


OtherProceedings of the 1998 Conference on Lasers and Electro-Optics, CLEO
CitySan Francisco, CA, USA

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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