A terahertz time-domain spectrometer for simultaneous transmission and reflection measurements at normal incidence

被引：24

作者：

Brunner, Fabian D. J. ^{[1
]}

Schneider, Arno ^{[1
]}

Guenter, Peter ^{[1
]}

机构：

[1] ETH, Inst Quantum Elect, Nonlinear Opt Lab, CH-8093 Zurich, Switzerland

来源：

OPTICS EXPRESS | 2009年 / 17卷 / 23期

关键词：

OPTICAL-PROPERTIES; SPECTROSCOPY; CRYSTALS; PHASE; SEMICONDUCTORS; TRANSCEIVER; GENERATION; LATTICES; PULSES; RANGE;

D O I：

10.1364/OE.17.020684

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a versatile terahertz time-domain spectrometer which allows reflection measurements at normal incidence and double pass transmission measurements in a single experimental setup. Two different modes for transmission measurements are demonstrated for precise measurements of transparent high or low refractive index materials, respectively. The refractive indices and absorption coefficients of cesium iodide, potassium bromide, sodium chloride, polytetrafluoroethylene (PTFE, Teflon), and silicon have been measured in the frequency range between 1.4 and 4.7 THz. The parameters of the Lorentz oscillator functions describing the phonon polariton dispersions of CsI and KBr have been determined. (C) 2009 Optical Society of America

引用

页码：20684 / 20693

页数：10

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