Eu-doping induced improvement on the second harmonic generation of ZnO Nanowires
Eu-doping induced improvement on the second harmonic generation of ZnO Nanowires
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DOI：
10.1557/opl.2014.367
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
S. Dhara;K. Imakita;M. Mizuhata;M. Fujii
中科院分区：
文献类型：
--
作者：
S. Dhara;K. Imakita;M. Mizuhata;M. Fujii
We report the Eu doping induced improvement on the second harmonic generation (SHG) of ZnO nanowires and correlates with the structural modification and corresponding linear absorption. A non-monotonic enhancement in the SHG emission is observed with the increase of Eu concentration. To understand the underlying mechanism, the effective second order non–linear coefficient (d eff ) is calculated from the theoretical fitting with considering the absorption effect. The highest d eff (19.09±0.11 pm/V) is obtained for the 1 at.% Eu doped ZnO nanowires, which is several times larger than the standard SHG material β -BaB 2 O 4 (BBO). Dependence of the d eff with the Eu doping, structural modification and absorption magnitude are systematically discussed.
