Near-resonant second-order nonlinear susceptibility in c-axis oriented ZnO nanorods

被引：17

作者：

Liu, Weiwei ^{[1
]}

Wang, Kai ^{[1
]}

Long, Hua ^{[1
]}

Chu, Sheng ^{[2
]}

Wang, Bing ^{[1
]}

Lu, Peixiang ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China

[2] Sun Yat Sen Univ, Sch Phys & Engn, Guangzhou 510275, Guangdong, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2014年 / 105卷 / 07期

基金：

中国国家自然科学基金;

关键词：

2ND-HARMONIC GENERATION; ZINC-OXIDE; SINGLE; NANOWIRE; COEFFICIENTS;

D O I：

10.1063/1.4893599

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Near-resonant second-harmonic generation (SHG) in c-axis oriented ZnO nanorods is studied under the femtosecond laser with wavelength from 780 nm to 810 nm. A highly efficient SHG is obtained, which is attributed to the d(131) component of the second-order nonlinear susceptibility. The largest d(131) value is estimated to be 10.2 pm/V at the pumping wavelength of 800 nm, which indicates a large SHG response of the c-axis oriented ZnO nanorods in the near-resonant region. Theoretical calculation based on finite-difference time-domain simulation suggests a four-fold local-field enhancement of the SHG. (C) 2014 AIP Publishing LLC.

引用

页数：4

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