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Journal of Chemical Physics / Volume 127 / Issue 9 / ARTICLES / Gas Phase Dynamics and Structure: Spectroscopy, Molecular Interactions, Scattering, and Photochemistry

J. Chem. Phys. 127, 094308 (2007); http://dx.doi.org/10.1063/1.2761915 (10 pages)

Retrieving the susceptibility from time-resolved terahertz experiments

J. M. Schins1, E. Hendry2, M. Bonn3, and H. G. Muller3

1Opto-Electronic Materials Section, DelftChem Tech, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands
2School of Physics, University of Exeter, Stocker Road, Exeter EX4 4QL, United Kingdom
3FOM-Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ Amsterdam, The Netherlands

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(Received 28 November 2006; accepted 26 June 2007; published online 7 September 2007)

We present an analytical expression for the observed signal in time- and phase-resolved pump-probe studies, with particular emphasis on terahertz time-domain spectroscopy. Maxwell’s equations are solved for the response of damped, harmonic oscillators to a driving probe field in the perturbative regime. Our analytical expressions agree with the one previously reported in the literature [ Nemec et al., J. Chem. Phys. 122, 104503 (2005) ] in the Drude limit; however, they differ in the case of a vibrational resonance.

© 2007 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENTAL SETUP
  3. APPROXIMATIONS AND ASSUMPTIONS
  4. MAXWELL’S EQUATIONS
  5. TEMPORAL PART: VIBRATIONAL RESONANCES
  6. DRUDE ELECTRON GAS
  7. SPATIAL DEPENDENCE
  8. NUMERICAL VALIDATION
  9. DISCUSSION

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KEYWORDS and PACS

Keywords

harmonic oscillators, laser beams, Maxwell equations, measurement by laser beam, submillimetre wave spectra, time resolved spectra

PACS

  • 42.62.Fi

    Laser spectroscopy

  • 42.60.Jf

    Beam characteristics: profile, intensity, and power; spatial pattern formation

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2761915

PUBLICATION DATA

ISSN

0021-9606 (print)  
1089-7690 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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