title: Second-harmonic generation in He+-implanted gadolinium calcium oxoborate planar waveguides.
abstract: What is believed to be the first investigation of second-harmonic generation (SHG) in Ca(4)GdO (BO(3))(3) waveguides is reported. A planar waveguide was formed by 2-MeV-helium implantation. We cut the sample to achieve type I noncritical phase matching of an 823-nm fundamental wave for fundamental light propagating along the y axis and polarized along the z crystallophysic axis of the crystal. SHG was achieved with a relatively low pumping power of a cw Ti:sapphire laser. The results indicate that the nonlinearity of the material remains in the guiding region after ion implantation.
authors: A
authors: A
authors: Boudrioua
authors: J C
authors: JC
authors: Loulergue
authors: P
authors: P
authors: Moretti
authors: B
authors: B
authors: Jacquier
authors: G
authors: G
authors: Aka
authors: D
authors: D
authors: Vivien