Measurement of cascaded phase shift in MgO : LiNbO3 single crystal by nonlinear ellipsometric method

Abstract

We demonstrate a nonlinear ellipsometric method for measuring both the magnitude and the sign of the second-order cascaded phase shift associated with the type-I second harmonic generation process in a MgO-doped LiNbO3 single crystal. This method does not require a well-defined beam profile or interferometric stability because phase can be determined by simply comparing the two orthogonal polarization components of the fundamental output beam. (C) 1999 Elsevier Science B.V. All rights reserved.