Optical and dielectric properties of ZnO tetrapod structures at terahertz frequencies

被引：60

作者：

Han, Jiaguang ^{[1
]}

Zhu, Zhiyuan

Ray, Sanith

Azad, Abul K.

Zhang, Weili

He, Mingxia

Li, Shihong

Zhao, Yiping

机构：

[1] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

[2] Oklahoma State Univ, Sch Elect & Comp Engn, Stillwater, OK 74078 USA

[3] Tianjin Univ, Coll Precis Instrument & Optoelect, Tianjin 300072, Peoples R China

[4] Univ Georgia, Dept Phys & Astron, Nanoscale Sci & Engn Ctr, Athens, GA 30602 USA

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2222329

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The low-frequency optical and dielectric properties of ZnO tetrapod structures prepared by thermophysical method were studied by terahertz time-domain spectroscopy. The power absorption, refractive index, and the complex dielectric function were measured in the frequency range from 0.2 to 3.5 THz. Based on a simple effective medium theory, the low-frequency dielectric properties of ZnO tetrapods were found to be associated with the transverse optical E-1 phonon mode, which is consistent with that observed in bulk single-crystal ZnO. (c) 2006 American Institute of Physics.

引用

页数：3

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