Low-power terahertz time-domain spectroscopy with optimized electro-optical detection

被引：5

作者：

Gorenflo, S ^{[1
]}

Hinkov, I ^{[1
]}

Lambrecht, A ^{[1
]}

Fischer, B ^{[1
]}

Hoffmann, M ^{[1
]}

Helm, H ^{[1
]}

Jepsen, PU ^{[1
]}

机构：

[1] Fraunhofer Inst Phys Messtech, D-79110 Freiburg, Germany

来源：

TM-TECHNISCHES MESSEN | 2005年 / 72卷 / 7-8期

关键词：

THz-TDS; electro-optical detection; Pockels effect; photoconductive antenna; absorption spectra; molecule spectroscopy;

D O I：

10.1524/teme.2005.72.7-8.430

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A Terahertz Time-Domain Spectroscopy (THz-TDS) system with electro-optical detector based on a ZnTe crystal is presented. The pump laser is a Ti:Sa laser with pulse duration of approx. 10 fs at a central wavelength of 800 nm. Using an optimized detection configuration, a signal-to-noise ratio better than 10(3) is achieved, applying an optical laser power of only 25 mW. Several substances can be clearly distinguished on the basis of their specific THz absorption spectra.

引用

页码：430 / 439

页数：10

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