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Generation of 10  µJ ultrashort terahertz pulses by optical rectification

Appl. Phys. Lett. 90, 171121 (2007); doi:10.1063/1.2734374

Published 27 April 2007

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K.-L. Yeh, M. C. Hoffmann, J. Hebling, and Keith A. Nelson
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
Generation of near single-cycle pulses centered at 0.5  THz frequency with up to 10  µJ energy, 100  µW average power, and 5.0  MW peak power was demonstrated by tilting the intensity front of a femtosecond optical pump pulse from a 10  Hz Ti:sapphire laser to match the phonon-polariton phase velocity to the group velocity of the pump pulses in a lithium niobate crystal. Terahertz pulse intensity as high as 10  MW/cm2 was achieved. The photon conversion efficiency was 45% and the calculated peak electric field strength at the focus of an off-axis parabolic mirror was 250  kV/cm. ©2007 American Institute of Physics
History: Received 22 March 2007; accepted 1 April 2007; published 27 April 2007
Permalink: http://link.aip.org/link/?APPLAB/90/171121/1
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KEYWORDS and PACS

Keywords
PACS
  • 42.65.Re
    Ultrafast processes; optical pulse generation and pulse compression
  • YEAR: 2007

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ISSN:
0003-6951 (print)   1077-3118 (online)
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