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High Energy THz Pulse Generation by Tilted Pulse Front Excitation and Its Nonlinear Optical Applications

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Abstract

Generation of high energy THz pulses by tilted pulse front excitation is reviewed. The basic idea and the realized setups are described. Properties of THz pulses generated by using different pump lasers are summarized. Nonlinear optical effects induced by the high energy THz pulses were observed, such as nonlinear refraction, self-phase modulation, saturation of THz absorption, and free carrier generation. The main results on these phenomena are described. The possibility of using THz pulses as a quasi-dc field for increasing the cut-off frequency in high harmonic generation is analyzed. The THz generation setup used in recent experiments is analyzed and arrangements for achieving better THz beam quality and higher THz pulse energy are considered. Finally, some results of calculations indicating significantly increased generation efficiency of 0.2-THz pulses compared to generation efficiency of 1-THz pulses are presented.

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Acknowledgments

Financial support from Hungarian Scientific Research Fund (OTKA), grant numbers 76101 and 78262, and from Science, Please! Research Team on Innovation (SROP-4.2.2/08/1/2008-0011) is acknowledged.

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Authors and Affiliations

  1. Department of Experimental Physics, University of Pécs, Ifjúság ú. 6, 7624, Pécs, Hungary

    József András Fülöp, László Pálfalvi, Gábor Almási & János Hebling

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  1. József András Fülöp
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  2. László Pálfalvi
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  3. Gábor Almási
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  4. János Hebling
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Correspondence to János Hebling.

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Fülöp, J.A., Pálfalvi, L., Almási, G. et al. High Energy THz Pulse Generation by Tilted Pulse Front Excitation and Its Nonlinear Optical Applications. J Infrared Milli Terahz Waves 32, 553–561 (2011). https://doi.org/10.1007/s10762-010-9667-3

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  • DOI: https://doi.org/10.1007/s10762-010-9667-3

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