Enhancement Effect Of Goos-H(?)nchen Shift And Fabry-Perot Oscillating Field Sensor

Goos-H?nchen shift refers to the lateral shift of a totally reflected beam from the position predicted by geometrical optics. It is because each plane wave component of the incident beam undergoes a slight different phase change after total internal reflection. Many representation approaches to the Goos-H?nchen shift have been developed. In this paper, we examine theoretically the GH shift under the conditions of guided wave resonance and surface plasmon resonance by using the stationary phase method and numerical calculation method with an incident beam of the Gaussian shape.At a single dielectric interface, the GH shift is of the order of wavelength. The smallness of the shift for optical wavelengths had impeded its direct observation in a single reflection. Therefore, on the one hand, the wavelengths in the microwave range are selected to perform experiments. On the other hand, the enhancement effects of GH shift under different conditions were analyzed in many papers. Up to now, many kinds of enhancement effects of GH shift were reported. The enhancement effect of GH shift due to the surface plasmon resonance was discussed in 1980s. In 2004, Xiaobo Yin et al. firstly reported the...