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arXiv · 1211.3496

Laterally emitted surface second harmonic generation in a single ZnTe nanowire

Weiwei Liu·Kai Wang·Zhe Liu·Guozhen Shen·Peixiang Lu
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Abstract

We report a direct observation on the unique laterally emitted surface second harmonic generation (SHG) in a single ZnTe nanowire. The highly directional surface SHG signal that polarizes along the direction vertical to the nanowire growth axis, is significantly larger than the bulk SHG contribution, indicating a high efficiency of surface SHG. Two strong SHG peaks are observed on both sides of the nanowire surfaces in the far-field scanning images, which is further supported by FDTD simulations, demonstrating that the unique laterally emitted signal is ascribed to surface SHG in the ZnTe nanowire. The surface SHG in a single ZnTe nanowire with unique lateral emission and high conversion efficiency shows great potential applications in short-wavelength nanolasers, nonlinear microscopy and polarization dependent photonic integrating.

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Weiwei Liu, Kai Wang, Zhe Liu, Guozhen Shen, Peixiang Lu. 2013-04-16. Laterally emitted surface second harmonic generation in a single ZnTe nanowire. https://doi.org/10.1021/nl401921s

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