Optical amplification in a first-generation dendritic organic semiconductor

J R Lawrence, G A Turnbull, I D W Samuel, G J Richards, P L Burn

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

We report a study of a new class of organic semiconductor as an optical gain medium. We demonstrate amplification of violet light by use of stimulated emission in a solution of a first-generation bis-fluorene-cored semiconducting dendrimer. Amplification is also observed in the solid state by means of amplified spontaneous emission in an optically pumped dendrimer planar waveguide. Gains of 36 dBcm(-1) at 420 nm and 26 dB cm(-1) at 390 nm in solution and 350 dB cm(-1) in the solid state are obtained. These results show that semiconducting dendrimers have potential as visible laser and amplifier materials. (C) 2004 Optical Society of America.

Original languageEnglish
Pages (from-to)869-871
Number of pages3
JournalOptics Letters
Volume29
Publication statusPublished - 15 Apr 2004

Keywords

  • LIGHT-EMITTING-DIODES
  • CONJUGATED POLYMERS
  • LASER-EMISSION
  • WAVE-GUIDES
  • GAIN
  • GENERATION
  • TRANSPORT

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