Microcavity effects and optically pumped lasing in single conjugated polymer nanowires

Deirdre M O'Carroll, Ingo Lieberwirth, Gareth Redmond

Research output: Contribution to journalArticle

289 Citations (Scopus)

Abstract

Conjugated polymers have chemically tuneable opto-electronic properties and are easily processed, making them attractive materials for photonics applications. Conjugated polymer lasers, in a variety of resonator geometries such as microcavity, micro-ring, distributed feedback and photonic bandgap structures, have been fabricated using a range of coating and imprinting techniques. Currently, one-dimensional nanowires are emerging as promising candidates for integrated, subwavelength active and passive photonic devices. We report the first observation of optically pumped lasing in single conjugated polymer nanowires. The waveguide and resonator properties of each wire are characterized in the far optical field at room temperature. The end faces of the nanowire are optically flat and the nanowire acts as a cylindrical optical cavity, exhibiting axial Fabry-Pérot mode structure in the emission spectrum. Above a threshold incident pump energy, the emission spectrum collapses to a single, sharp peak with an instrument-limited line width that is characteristic of single-mode excitonic laser action.

Original languageEnglish
Pages (from-to)180-184
Number of pages5
JournalNature Nanotechnology
Volume2
Issue number3
DOIs
Publication statusPublished - Mar 2007

Fingerprint

Microcavities
Conjugated polymers
Nanowires
lasing
nanowires
polymers
photonics
Photonics
Resonators
emission spectra
resonators
Photonic devices
laser modes
Laser modes
Electronic properties
Linewidth
emerging
Energy gap
Waveguides
Pumps

ASJC Scopus subject areas

  • Bioengineering
  • Biomedical Engineering
  • Materials Science(all)
  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics

Cite this

Microcavity effects and optically pumped lasing in single conjugated polymer nanowires. / O'Carroll, Deirdre M; Lieberwirth, Ingo; Redmond, Gareth.

In: Nature Nanotechnology, Vol. 2, No. 3, 03.2007, p. 180-184.

Research output: Contribution to journalArticle

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