ZHENG Zhong-kui, DUANMU Qing-duo, ZHAO Dong-xu. Optically Pumped Lasing from ZnO Nanorods Using Au as Reflection Mirror[J]. Chinese Journal of Luminescence, 2012,33(7): 764-767
ZHENG Zhong-kui, DUANMU Qing-duo, ZHAO Dong-xu. Optically Pumped Lasing from ZnO Nanorods Using Au as Reflection Mirror[J]. Chinese Journal of Luminescence, 2012,33(7): 764-767 DOI: 10.3788/fgxb20123307.0764.
ZnO nanorods were grown on a thin Au layer by hydrothermal method. In the photoluminescence (PL) spectrum
a strong UV emission and a weak deep-level emission were observed. The optically pumped lasing could be detected in ZnO nanorods. The integrated intensity of the spectra increases nonlinearly with the excitation power density
which indicated there exists the stimulated emission. And multi-mode emission peaks emerged when the excitation power density exceeded the threshold. Using Au layer as mirror
the light loss was further decreased
which resulted in the decrease of the laser threshold to 31.2 kW/cm
2
.
关键词
激光ZnO纳米棒
Keywords
lasingZnOnanorods
references
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