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Lasing in whispering gallery mode in ZnO nanonails

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7 Author(s)
Wang, D. ; Department of Physics, Auburn University, Auburn, Alabama 36849 ; Seo, H.W. ; Tin, C.-C. ; Bozack, M.J.
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We report on the observation of ultraviolet lasing in optically pumped ZnO nanonails synthesized by thermal chemical vapor deposition method. The lasing threshold was found to be 17 MW cm-2. Very sharp emission peaks (full width at half maximum of 0.08 nm) were observed in the emission spectrum, indicating a high Q factor of the cavity formed by the hexagonally shaped nanonail head. The analysis of the lasing spectra strongly suggests the whispering gallery mode lasing from a hexagonally shaped head of the single ZnO nanonail.

Published in:

Journal of Applied Physics  (Volume:99 ,  Issue: 9 )

Date of Publication:

May 2006

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