Nanosecond two-photon absorption and lasing in fluorene-based organic semiconductors

Georgios Tsiminis, Jean Charles Ribierre, Arvydas Ruseckas, Gary J. Richards, Paul L. Burn, Graham A. Turnbull, Ifor D.W. Samuel

Research output: Contribution to journalArticlepeer-review


This work reports the nanosecond nonlinear absorption properties of two fluorene-based organic semiconductors and their application in nanosecond two-photon pumped lasers. The materials studied under nanosecond excitation are a first generation bisfluorene-cored dendrimer with biphenyl dendrons, and 2-ethylhexyloxy surface groups and poly(9,9-di-n-octylfluorene). The nonlinear absorption properties are reported, together with tunable distributed feedback lasers that operate under nanosecond two-photon excitation at 600 nm for the dendrimer and 650 nm for the polymer. This highlights the feasibility of optically pumping organic lasers using long excitation pulses in the red part of the spectrum.

Original languageEnglish
Pages (from-to)227-238
Number of pages12
JournalNonlinear Optics Quantum Optics
Issue number1-4
Publication statusPublished - 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Atomic and Molecular Physics, and Optics
  • Instrumentation


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