Ultraviolet coherent random lasing in randomly assembled SnO2 nanowires

H. Y. Yang, S. F. Yu, S. P. Lau, S. H. Tsang, G. Z. Xing, Tao Wu

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

Although nanostructured SnO2 exhibited ultraviolet stimulated emission at room temperature, the low emission intensities and occurrence of gain saturation restricted them to be considered as luminescent materials for semiconductor lasers. In this letter, we find that a large ultraviolet excitonic gain can be obtained from SnO2 nanowires coated with an amorphous layer. Under effective pumping, ultraviolet coherent random lasing can be realized from randomly assembled SnO2 nanowires at room temperature.

Original languageEnglish (US)
Article number241121
JournalApplied Physics Letters
Volume94
Issue number24
DOIs
StatePublished - Jun 29 2009

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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