Finite-difference time-domain analysis of time-resolved terahertz spectroscopy experiments

被引：21
|
作者：
Larsen, Casper [1 ]
Cooke, David G. [2 ]
Jepsen, Peter Uhd [1 ]
机构：
[1] Tech Univ Denmark, DTU Fotonik Dept Photon Engn, DK-2800 Lyngby, Denmark
[2] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2011年 / 28卷 / 05期
关键词：
ELECTROOPTIC DETECTION; RADIATION; DYNAMICS; SEMICONDUCTORS; PROPAGATION; CARRIER; GAAS;
D O I：
10.1364/JOSAB.28.001308
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this paper we report on the numerical analysis of a time-resolved terahertz (THz) spectroscopy experiment using a modified finite-difference time-domain method. Using this method, we show that ultrafast carrier dynamics can be extracted with a time resolution smaller than the duration of the THz probe pulse and can be determined solely by the pump pulse duration. Our method is found to reproduce complicated two-dimensional transient conductivity maps exceedingly well, demonstrating the power of the time-domain numerical method for extracting ultrafast and dynamic transport parameters from time-resolved THz spectroscopy experiments. The numerical implementation is available online. (C) 2011 Optical Society of America
引用
收藏
页码：1308 / 1316
页数：9
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