Absolute second order nonlinear susceptibility of Pt nanowire arrays on MgO faceted substrates with various cross-sectional shapes

作者：Ogata Yoichi; Mizutani Goro^*

来源：Applied Physics Letters, 2013, 103(9): 093107.

DOI：10.1063/1.4819916

We have measured optical second harmonic generation (SHG) intensity from three types of Pt nanowires with 7 nm widths of elliptical and boomerang cross-sectional shapes and with 2 nm width elliptical cross-sectional shapes on the MgO faceted templates. From the SHG intensities, we calculated the absolute value of the nonlinear susceptibility chi((2)) integrated in the direction of the wire-layer thickness. The tentatively obtained bulk chi((2))(B) of the wire layer was very large, approaching the value of the well-known nonlinear optical material BaTiO3.

• 出版日期2013-8-26