Abstract

The technique of second-harmonic generation with an evanescent wave (SHEW) and the Maker fringe technique were examined by simulation of least-squares fitting. The calculations were made for correlation among parameters in a fit and error-propagation coefficients between parameters. Correlation among parameters for the SHEW technique is lower and the parameter value for the second-order nonlinear optical coefficient d is less sensitive to errors of refractive indices than for the Maker fringe technique. As a result, use of the SHEW technique can provide more-accurate values for the d coefficient than use of the Maker fringe technique.

© 1995 Optical Society of America

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