title: Nonlinear optical properties of calcium barium niobate epitaxial thin films.
abstract: We investigate the potential of epitaxial calcium barium niobate (CBN) thin film grown by pulsed laser deposition for optical frequency conversion. Using second harmonic generation (SHG), we analyze the polarization response of the generated signal to determine the ratios d15/ d32and d33/ d32of the three independent components of the second-order nonlinear susceptibility tensor in CBN thin film. In addition, a detailed comparison to the signal intensity obtained in a y-cut quartz allows us to measure the absolute value of these components in CBN thin film: d15= 5 ± 2 pm / V, d32= 3.1 ± 0.6 pm / V and d33= 9 ± 2 pm / V.
authors.forename: Stéphane
authors.initials: S
authors.lastname: Bancelin
authors.forename: Sébastien
authors.initials: S
authors.lastname: Vigne
authors.forename: Nadir
authors.initials: N
authors.lastname: Hossain
authors.forename: Mohammed
authors.initials: M
authors.lastname: Chaker
authors.forename: François
authors.initials: F
authors.lastname: Légaré