Determination of second-order susceptibility tensor elements of organic multilayer and waveguide structure

Planar waveguides of 2-docosylamino-5-nitropyridine (DCANP) deposited by Langmuir-Blodgett technique have been investigated by second harmonic generation (SHG). By measuring the polarization dependence of the generated SH wave within the waveguide two independent elements of the second order susceptibility tensor have been determined. A comparison of these results with the angular dependence of the reflected SHG carried out on thin films for evaluating the same tensor elements is given.