Light amplification and gain in polyfluorene waveguides

Research output: Contribution to journalArticlepeer-review

162 Citations (Scopus)

Abstract

We report a study of the properties of the semiconducting polymer poly(9,9-dioctylfluorene) (PFO) as a gain medium. We demonstrate amplification of blue light via amplified spontaneous emission (ASE) measurements on optically pumped PFO planar asymmetric waveguides. We show that the ASE wavelength can be tuned over a range of 20 nm by altering the supported waveguide modes. Gain/loss measurements at the peak ASE wavelength (466 nm) show that the waveguides can exhibit a large net gain of up to 74 cm(-1) and have a very low loss coefficient similar to3 cm(-1). These characteristics make PFO attractive as a high gain medium for short-wavelength lasers and optical amplifiers. (C) 2002 American Institute of Physics.

Original languageEnglish
Pages (from-to)415-417
Number of pages3
JournalApplied Physics Letters
Volume81
Issue number3
DOIs
Publication statusPublished - 15 Jul 2002

Keywords

  • AMPLIFIED SPONTANEOUS EMISSION
  • CONJUGATED POLYMERS
  • WAVE-GUIDE
  • FILMS
  • LASERS

Fingerprint

Dive into the research topics of 'Light amplification and gain in polyfluorene waveguides'. Together they form a unique fingerprint.

Cite this