Aligned growth of ZnO nanowires and lasing in single ZnO nanowire optical cavities

R. Q. Guo, J. Nishimura, M. Matsumoto, M. Higashihata, Daisuke Nakamura, Junya Suehiro, T. Okada

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

Ordered ZnO nanowire arrays have been fabricated in N2 background gas by catalyst-free nanoparticle-assisted pulsed-laser deposition. A single ZnO nanowire was collected in an electrode gap by dielectrophoresis. Under the optical pumping above an exciting laser (λ=∈355 nm) threshold of ∼ 334 kW/cm2, ultraviolet lasing action in a single ZnO nanowire was observed at room temperature, indicating that the as-synthesized nanowires in pure N2 background gas are of high quality. The crystalline facets of both ends of the nanowire acted to form an optical cavity. Therefore, the mode spacings corresponding to cavity lengths of the respective nanowires were observed in photoluminescence spectra.

Original languageEnglish
Pages (from-to)539-542
Number of pages4
JournalApplied Physics B: Lasers and Optics
Volume90
Issue number3-4
DOIs
Publication statusPublished - Mar 1 2008

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)

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