Depth profiling of the X~(2) distribuftion in poled nonlinear optical polymer films

摘要

We present experimentla and theoretical details on how to analyze the polarization distribution in poled second order nonlinear optical polymers in three dimensions. The polar order can be analyzed in both the lateral and the vertical directions. Local thermal reorientation was accomplished using an Argon laser at a wavelength of 488 nm, and the resulting change in polarization was analyzed by multi-lambda SSHM. We could demonstrate that the relative chang ein polarization is strongest at the surface that was irradiated with the Argon laser and decreases towards the opposite surface.