Light amplification and laser emission in conjugated polymers

Axel Schülzgen, Christine Spiegelberg, Michael M. Morrell, Sergio B. Mendes, Pierre Marc Allemand, Yutaka Kawabe, Makoto Kuwata-Gonokami, Seppo Honkanen, Mahmoud Fallahi, Bernard Kippelen, Nasser Peyghambarian

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


We study optical gain and laser emission from semiconducting conjugated polymers after strong optical excitation with femtosecond laser pulses. Stimulated emission from few-hundred-nanometer thin films results in a sharp increase in emission intensity and emission line narrowing. Very large optical gain due to the stimulated emission is measured directly by pump-probe spectroscopy. Using the large light amplification in these conjugated polymers, we demonstrated planar and ring lasers of very small sizes that are suitable for applications in integrated optics. Vertical cavity surface emitting lasers, distributed feedback through surface relief grating, and whispering-gallery mode emission from ring resonators are demonstrated.

Original languageEnglish (US)
Pages (from-to)1149-1156
Number of pages8
JournalOptical Engineering
Issue number4
StatePublished - Apr 1998


  • Conjugated polymers
  • Laser emission
  • Optical gain
  • Resonator configurations

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)


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