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The consequences of diffractively spreading beams in ultrafast THz spectroscopy

Bowen, J. W., Walker, G. C., Hadjiloucas, S. and Berry, E. (2004) The consequences of diffractively spreading beams in ultrafast THz spectroscopy. In: Thumm, M. and Wiesbeck, W. (eds.) Conference Digest of the 2004 Joint 29th International Conference on Infrared and Millimeter Waves and 12th International Conference on Terahertz Electronics. IEEE, New York, pp. 551-552. ISBN 0780384903

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Abstract/Summary

There are established methods for calculating optical constants from measurements using a broadband terahertz (THz) source. Applications to ultrafast THz spectroscopy have adopted the key assumption that the THz beam is treated as a normal incidence plane-wave. We show that this assumption results in a frequency-dependent systematic error, which is compounded by distortion of the beam on introduction of the sample.

Item Type:Book or Report Section
Divisions:Faculty of Science > School of Systems Engineering
ID Code:14363
Additional Information:Proceedings Paper Joint 29th International Conference on Infrared and Millimeter Waves/12th International Conference on Terahertz Electronics SEP 17-OCT 01, 2004 Karlsruhe, GERMANY
Publisher:IEEE

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