Ultraviolet amplified spontaneous emission from self-organized network of zinc oxide nanofibers

C. X. Xu, X. W. Sun, Clement Yuen, B. J. Chen, Siu Fung Yu, Z. L. Dong

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79 Citations (Scopus)

Abstract

Self-organized zinc oxide (ZnO) nanofiber network with six-fold symmetry was fabricated on ZnO-buffered (0001) sapphire substrate with patterned gold catalyst by vapor-phase transport method. From the ZnO buffer layer, hexagonal ZnO nanorods with identical in-plane structure grew epitaxially along [0001] orientation to form vertical stems. The nanofiber branches grew horizontally from six side-surfaces of the vertical stem along [01 1- 0] and other equivalent directions. The aligned network structure constructed a waveguide array with optical gain. Ultraviolet amplified spontaneous emission was observed along the side-branching nanofibers when the aligned ZnO network was excited by a frequency-tripled Nd:YAG laser.
Original languageEnglish
Article number011118
JournalApplied Physics Letters
Volume86
Issue number1
DOIs
Publication statusPublished - 1 Jan 2005
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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