Simultaneous measurement of optical constants of dispersive material at visible and infrared wavelengths

• DOI: 10.1364/ao.36.000877
• Publication Date: 2008-05-14T13:55:59Z
• Authors: You Wang; Mitsunobu Miyagi
• Keywords: 0103 physical sciences; 01 natural sciences

A systematic method has been proposed to evaluate the complex refractive indices and thicknesses of dispersive polymer thin films in both visible and infrared regions. The curve-fitting method has been applied to the measurement of the film thicknesses and complex refractive indices in the visible and near-infrared regions. The accuracy of the evaluated film thickness is of the order of +/-0.5%. The presented method is useful for characterizing the optical properties of polymers whose refractive indices are near to those of substrates.