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

93 Scopus citations


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
Issue number2
StatePublished - 1998

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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