Far-infrared optical and dielectric response of ZnS measured by terahertz time-domain spectroscopy

被引：44

作者：

Thamizhmani, L ^{[1
]}

Azad, AK ^{[1
]}

Dai, JM ^{[1
]}

Zhang, W ^{[1
]}

机构：

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

来源：

APPLIED PHYSICS LETTERS | 2005年 / 86卷 / 13期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.1896451

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The optoelectronic technique of terahertz time-domain spectroscopy (THz-TDS) has been applied to measure the frequency-dependent optical and dielectric properties of ZnS in the frequency range extending from 0.3 to 3.5 THz. THz-TDS clearly reveals the low-frequency phonon resonance features in both the single- and polycrystalline ZnS. These phonons account for the increased absorption as indicated by the resonance lines in the spectra. The measured index of refraction, is found to be dominated by the transverse optical-phonon resonance, which is verified by a theoretical fit using the relation for the dielectric response of the damped harmonic oscillator. (C) 2005 American Institute of Physics.

引用

页码：1 / 3

页数：3

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