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Propagation of terahertz pulses in photoexcited media: Analytical theory for layered systems

Kuzel, P.; Kadlec, F. and Nemec, Hynek LU (2007) In Journal of Chemical Physics 127(2).
Abstract
Optical pump-terahertz probe spectroscopy has become a widely used experimental tool for the investigation of the ultrafast far-infrared response of polar systems. In this paper the authors present an analytical method of calculating the propagation of ultrashort terahertz pulses in photoexcited media. The transient terahertz wave form transmitted through the sample is equal to a product of the incident terahertz field (at a mixed frequency), transient susceptibility, and a so called transfer function which depends on the properties of the sample in equilibrium. The form of the transfer function is derived for general layered systems and for specific cases including one-dimensional photonic crystals, thin films, and bulk samples.... (More)
Optical pump-terahertz probe spectroscopy has become a widely used experimental tool for the investigation of the ultrafast far-infrared response of polar systems. In this paper the authors present an analytical method of calculating the propagation of ultrashort terahertz pulses in photoexcited media. The transient terahertz wave form transmitted through the sample is equal to a product of the incident terahertz field (at a mixed frequency), transient susceptibility, and a so called transfer function which depends on the properties of the sample in equilibrium. The form of the transfer function is derived for general layered systems and for specific cases including one-dimensional photonic crystals, thin films, and bulk samples. Simplified expressions directly applicable to the analysis of the experimental results related to the most common sample geometries are shown and discussed. (C) 2007 American Institute of Physics. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Chemical Physics
volume
127
issue
2
publisher
American Institute of Physics
external identifiers
  • wos:000248020000024
  • scopus:34547226574
ISSN
0021-9606
DOI
10.1063/1.2748402
language
English
LU publication?
yes
id
cf062715-0a7d-44ad-9fdc-ca4739292784 (old id 645685)
date added to LUP
2007-12-13 17:55:51
date last changed
2017-11-05 03:28:25
@article{cf062715-0a7d-44ad-9fdc-ca4739292784,
  abstract     = {Optical pump-terahertz probe spectroscopy has become a widely used experimental tool for the investigation of the ultrafast far-infrared response of polar systems. In this paper the authors present an analytical method of calculating the propagation of ultrashort terahertz pulses in photoexcited media. The transient terahertz wave form transmitted through the sample is equal to a product of the incident terahertz field (at a mixed frequency), transient susceptibility, and a so called transfer function which depends on the properties of the sample in equilibrium. The form of the transfer function is derived for general layered systems and for specific cases including one-dimensional photonic crystals, thin films, and bulk samples. Simplified expressions directly applicable to the analysis of the experimental results related to the most common sample geometries are shown and discussed. (C) 2007 American Institute of Physics.},
  author       = {Kuzel, P. and Kadlec, F. and Nemec, Hynek},
  issn         = {0021-9606},
  language     = {eng},
  number       = {2},
  publisher    = {American Institute of Physics},
  series       = {Journal of Chemical Physics},
  title        = {Propagation of terahertz pulses in photoexcited media: Analytical theory for layered systems},
  url          = {http://dx.doi.org/10.1063/1.2748402},
  volume       = {127},
  year         = {2007},
}