Detectivity enhancement in THz electrooptical sampling

被引：22

作者：

Ahmed, Saima ^{[1
]}

Savolainen, Janne ^{[1
]}

Hamm, Peter ^{[1
]}

机构：

[1] Univ Zurich, Dept Chem, Zurich, Switzerland

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2014年 / 85卷 / 01期

基金：

瑞士国家科学基金会;

关键词：

TERAHERTZ-PROBE SPECTROSCOPY; TIME-DOMAIN SPECTROSCOPY; DYNAMICS; ELECTRONS; SILICON; DRIVEN;

D O I：

10.1063/1.4862657

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We demonstrate and discuss a simple scheme that significantly enhances the detectivity of THz electro-optical sampling by introducing a sequence of Brewster windows that increases the ellipticity of the probe beam. By varying the window material or the number of Brewster windows, the enhancement factor can be adjusted; we demonstrate an enhancement factor of approximate to 20 with four ZnSe Brewster windows. The scheme is particularly useful when very small THz fields are to be measured in connection with low-repetition rate amplified Ti:S laser systems. (C) 2014 AIP Publishing LLC.

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页数：3

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