The photo-induced linear electro-optics effect (EOE) has been revealed in Hg 0.89 Pb 0.17 Ba 0.11 Ba 2 CuO 4+δ (Hg-1201) single crystalline films coated on an MgO surface. Investigations have been performed using time-resolved measurements of the photovoltage, photocurrent, photoresistivity and linear EOE. A time delay shift between the non-linear optical response and photocurrent has been found. Applying external static magnetic fields (up to 1.7 T) we achieve a substantial decrease of the linear electro-optics coefficients. We discuss the possible origin of the observed phenomenon.
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