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Conceptual question: THz generation in ZnTe

  1. Jul 13, 2011 #1
    When a broadband 800nm sub-ps pulse propagates through ZnTe parallel to the {110} plane it produces in-phase THz radiation by moving the electrons down either the [-111] or [1-11] axis.

    Due to the electronegativity of Zn and Te the electric field of the optical pulse will push electrons closer to the tellurium than the zinc leading to a DC offset known as optical rectification.

    My question is whether the THz gets produced when the pulse first propagates through and moves the electrons up and down (accelerates), or after the pulse passes and the DC offset electrons relax (decelerate) to produce THz radiation.
  2. jcsd
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