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Whispering-gallery-mode microring laser using a conjugated polymer

  • Y. Kawabe
  • , Ch Spiegelberg
  • , A. Schülzgen
  • , M. F. Nabor
  • , B. Kippelen
  • , E. A. Mash
  • , P. M. Allemand
  • , M. Kuwata-Gonokami
  • , K. Takeda
  • , N. Peyghambarian

Research output: Contribution to journalArticlepeer-review

Abstract

We observed laser emission in whispering gallery modes using a microring composed of a semiconducting polymer poly[2,5-bis-(2-ethylhexyloxy)-p-phenylenevinylene coated on an etched fiber under transient and quasisteady-state pumping conditions. The threshold for laser oscillation was 1 mJ/cm2 (0.1 MW/cm2) and 30 μJ/cm2 (300 MW/cm2) for nanosecond and femtosecond excitation, respectively. The laser output showed superlinear dependence on the excitation energy above the threshold. The demonstration of lasing under quasisteady-state pumping shows the possibility to develop electrically pumped polymer lasers.

Original languageEnglish (US)
Pages (from-to)141-143
Number of pages3
JournalApplied Physics Letters
Volume72
Issue number2
DOIs
StatePublished - 1998

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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