Laterally emitted surface second harmonic generation in a single ZnTe nanowire.
Laterally emitted surface second harmonic generation in a single ZnTe nanowire.
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DOI：
10.1021/nl401921s
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发表时间：
2012-11
期刊：
影响因子：
10.8
通讯作者：
Wei-wei Liu;Kai Wang;Zhe Liu;G. Shen;P. Lu
中科院分区：
文献类型：
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作者：
Wei-wei Liu;Kai Wang;Zhe Liu;G. Shen;P. Lu
我们报告了对单根ZnTe纳米线中横向发射表面二次谐波产生（SHG）的直接观察。高定向表面SHG垂直向纳米线生长轴辐射，具有5 × 10（-6）的高转换效率和4°的低发散角。发现抽运激光的偏振态、发射强度和表面SHG的方向与抽运激光的偏振有关，并通过数值模拟进一步证实了这一点。侧向发射表面SHG具有高效率和低发散角的特点，在短波长纳米激光器、非线性显微成像和依赖偏振的光子积分等方面具有很大的应用潜力。
We report a direct observation on the laterally emitted surface second harmonic generation (SHG) in a single ZnTe nanowire. The highly directional surface SHG radiates vertically to the nanowire growth-axis with a high conversion efficiency of 5 × 10(-6) and a low divergence angle of 4°. Polarization state, emission intensity, and direction of the surface SHG are found to be dependent on the polarization of the pumping laser, which is further confirmed by numerical simulations. The laterally emitted surface SHG with a high efficiency and low divergence angle has great potential for short-wavelength nanolasers, nonlinear microscopic imaging, and polarization-dependent photonic integrating.