Abstract

Directly measuring the difference of the lateral Goos–Hänchen shift between TM and TE polarized lights under total internal reflection using what we believe is a new approach is introduced. This approach is based on the heterodyne interferometer system with two acousto-optic modulators driven at different frequencies combined with an analyzer with a high extinction ratio, two polarization beam splitters, an isosceles glass prism with two base angles of a critical angle, and a position-sensitive detector with high resolution. This approach compared to a 45° right-angle prism used to obtain the Goos–Hänchen shift on the total internal reflection has the advantages of reducing angle-modulated noise caused by small angle error of a rotary stage, the measurement of the absolute GH shifts of TE or TM polarized light, respectively, by means of the aluminum coating deposited on parallel plate glass, and the potential to simultaneously measure the phase changes and the GH shift at surface plasmon resonance in a Kretschmann–Raether configuration.

© 2018 Optical Society of America

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