The Resonant Propagation Of The Bounded Light Beam In The Planar Microstructure

Bounded light beam that is totally reflected by a dielectric interface may exhibit a lateral Goos-H(a|¨)nchen(GH) displacement from the position of geometric reflection in the plane of incidence. However,this displacement is very small and only of the order of the wavelength.This dissertation focus on the investigation of non-geometric optical phenomena about the resonantly enhanced GH displacement and its application because of boundary conditions and the interaction of the electric and magnetic fields with the media in course of the bounded light beam propagation in the microstructures.The main content and results are as follows:The property of the GH displacement is respectively discussed when the bounded light beam imping upon the plane boundary surface betweem two semi-infinity isotropic homogenous transparent media, or between the isotropic homogenous transparent medium and the weakly absorptive,weakly active medium and metal medium.GH displacement will be resonantly enhanced when the prism is coated by the optically thinner dielectric slab.It is theoretically proved that the GH displacement is dependent on the incident angle and thickness of the dielectric slab.It is experimentally detected that the relation between the resonant enhanced GH displacement and the thickness of the dielectric slab by use of Gaussian-shape microwave of the wavelength of 3cm.The experimental data are in agreement with the result of the numerical simulation.What's more,the GH displacement can be positive and negative when the bounded light beam propagates through the thin planar slab of optically denser dielectric medium in air.The property of the non-geometric phenomena will emerge when the bounded light beam propagates through the thin planar slab of the special optical character dielectric medium,such as isotropic weakly absorptive medium,weakly active medium and metal medium.It is predicted that the GH displacement can be resonantly enhanced in the double-prism configuration when the angle of incidence is below but near the critical angle for total reflection, which is totally different from the angle of incidence is larger than the critical angle for total reflection.Large and opposite GH displacement may occur simultaneously for TE and TM light beams upon reflection from an asymmetric double-prism configuration. But the GH displacement of reflection and transmission will be enhanced and equal in the symmetric double-prism configuration. The non-geometric phenomena is discussed when the inner facies of the double-prism are coated by a layer or two layer of the planar optically thinner dielectric slab.The position of the reflected and transmitted light beam can be controlled by the incident angle and the thickness of the slab,which may lead to interesting applications in optical devices and integrated optics.Finally, it is experimentally observed that the relation of the transmitted GH displacement and the thickness of the dielectric slab between two prism by use of Gaussian-shape microwave of the 3cm wavelength. The experimental data are in agreement with the result of the numerical simulation.The validity of the GH displacement is analyzed when the bounded light beam transmit through the resonant planar dielectric slab. The GH displacement is explained by the beam reshaping of the reflected and transmitted beams,since each plane wave component undergoes different phase shifts due to multiple internal reflections and is not results from the distortion of the beam profiles.The mechanism of the transmission and the restricted condition are discussed.The optical spatial comb that is a series of light beam of the same amplitudes on each side of the surface of the active plane-parallel dielectric slab on condition that the active index of the dielectric slab,the incident angle is choice properly and the thickness of the dielectric slab is larger than the restricted thickness.