Whispering-gallery-mode oscillation in a polymer microring laser

Yutaka Kawabe, Christine Spiegelberg, Axel Schülzgen, Marie Flore Nabor, Ghassan E. Jabbour, Bernard Kippelen, Eugene A. Mash, Piere M. Allemand, Nasser Peyghambarian, Makoto Kuwata-Gonokami, Kenji Takeda

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


We observed laser emission in whispering gallery modes using a microring composed of a light-emitting semiconducting polymer poly[2,5-bis-(2′-ethylhexyloxy)-p-phenylenevinylene] (BEH-PPV) coated on an etched fiber under transient and quasi steady-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 quasi steady-state pumping shows the possibility to develop electrically pumped polymer lasers. Preliminary results on the line narrowing in tripheny dilamine (TPD) films under nanosecond optical pumping are also presented.

Original languageEnglish (US)
Pages (from-to)211-216
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1998
EventPolymer Photonic Devices - San Jose, CA, United States
Duration: Jan 28 1998Jan 30 1998


  • Electroluminescence
  • Laser
  • Microring
  • N, N′-diphenyl-N,N′-bis(3-methylphenyl)-1,1′-biphenyl-4,4′- diamine
  • Organic materials
  • Poly[2,5-bis-(2′-ethylhexyloxy)-p-phenylenevinylene]
  • TPD
  • Whispering gallery mode

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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