2ND-HARMONIC GENERATION IN BATIO3 FILMS DOPED WITH CERIUM

Second-harmonic generation of 1.064 mu m incident light was measured o n BaTiO3 thin films, both a-axis and c-axis oriented, undoped and dope d with cerium, prepared by pulsed laser deposition. The dependence of second-harmonic generation (SHG) coefficients of these films on the in cidence angle and the polarization direction of the fundamental beam w ere investigated. The effective SHG coefficients was enhanced greatly when the films were doped with cerium. (C) 1998 American Institute of Physics. [S0003-6951(98)00344-1].