Optical amplification in a first-generation dendritic organic semiconductor

Justin R. Lawrence, Graham A. Turnbull, Ifor D.W. Samuel, Gary J. Richards, Paul L. Burn

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)


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 dB cm-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.

Original languageEnglish
Pages (from-to)869-871
Number of pages3
JournalOptics Letters
Issue number8
Publication statusPublished - 2004 Apr 15
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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