Terahertz-field-induced second harmonic generation through Pockels effect in zinc telluride crystal

Marion Cornet (1) , Jérôme Degert (1) , Emmanuel Abraham (1) , Eric Freysz (1)

1 LOMA - Laboratoire Ondes et Matière d'Aquitaine

We report on the second harmonic generation (SHG) of a near-infrared pulse in a zinc telluride crystal through the Pockels effect induced by an intense terahertz pulse. The temporal and angular behaviors of the SHG have been measured and agree well with theoretical predictions. This phenomenon, so far overlooked, makes it possible to generate second harmonic through cascading of two second-order nonlinear phenomena in the near-infrared and terahertz ranges. We also show how this cascading process can be used to sample terahertz pulses.

Mots clés: (190.0190) Nonlinear optics; (320.0320) Ultrafast optics; (190.2620) Harmonic generation and mixing

Domaines: Optique [physics.optics]

Marion Cornet, Jérôme Degert, Emmanuel Abraham, Eric Freysz. Terahertz-field-induced second harmonic generation through Pockels effect in zinc telluride crystal. Optics Letters, 2014, 39 (20), pp.5921-5924. ⟨10.1364/OL.39.005921⟩. ⟨hal-01091670⟩