Time-resolved study of stimulated emission in ZnO tetrapod nanowires

Y. H. Leung, Wai Ming Kwok, A. B. Djurišić, D. L. Phillips, W. K. Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

59 Citations (Scopus)

Abstract

ZnO tetrapod nanowires were fabricated by evaporation of Zn in a N2gas flow. Stimulated emission with a threshold of ∼ 100 μJ cm-2was observed and the linewidths of individual modes were in the range 0.7-0.9 nm. Time-resolved measurements have been performed at different excitation powers. With an increase of the pump power, the transition from exciton stimulated emission to the electron-hole plasma regime can be clearly observed. Both electron-hole plasma and exciton emission have decay times under 10 ps.
Original languageEnglish
Pages (from-to)579-582
Number of pages4
JournalNanotechnology
Volume16
Issue number4
DOIs
Publication statusPublished - 1 Apr 2005
Externally publishedYes

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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