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Nonlinear and near-field propagation effects of single-cycle terahertz pulses

Carey, J.J. and Jamison, S.P. and Jones, D. and Jaroszynski, D.A. and Wynne, K. and , IEEE and , IEEE (2002) Nonlinear and near-field propagation effects of single-cycle terahertz pulses. In: Lasers and Electro-Optics Society 2000 Annual Meeting. LEOS 2000. 13th Annual Meeting. IEEE, 2000-11-13 - 2000-11-16, Rio Grande.

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Abstract

A study of frustrated total internal reflection (FTIR) will be described in which evanescent electromagnetic waves travel in the air gap between two prisms. New data will be presented demonstrating superluminal propagation entirely measured and analyzed in the time domain using single-cycle terahertz pulses. It is found that the pulses are advanced more than ever seen before, more than a pulse width. Theoretical analysis shows that in FTIR part of the incoming pulse travels backwards in time apparently violating the principle of causality. The laser system used produces 150-fs pulses at a 250-kHz repetition frequency resulting in 600-mW average power at 800 nm

Item type: Conference or Workshop Item (Paper)
ID code: 18317
Keywords: laser beams, nonlinear optics, optical prisms, optical pulse generation, submillimetre wave measurement, Physics
Subjects: Science > Physics
Department: Faculty of Science > Physics
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 26 Mar 2010 20:19
    Last modified: 06 Sep 2014 17:29
    URI: http://strathprints.strath.ac.uk/id/eprint/18317

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