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

Casper Larsen, David G. Cooke, Peter Uhd Jepsen

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Abstract

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
Original languageEnglish
JournalOptical Society of America. Journal B: Optical Physics
Volume28
Issue number5
Pages (from-to)1308-1316
ISSN0740-3224
DOIs
Publication statusPublished - 2011

Bibliographical note

This paper was published in Optical Society of America. Journal B: Optical Physics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/abstract.cfm?URI=josab-28-5-1308. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

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