Negative lateral shift of a light beam transmitted through a dielectric slab and interaction of boundary effects

被引：247
作者：
Li, CF
机构：
[1] Acad Sinica, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt Technol, Xian 710068, Peoples R China
[2] Shanghai Univ, Dept Phys, Shanghai 200436, Peoples R China
来源：
PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 13期
关键词：
D O I：
10.1103/PhysRevLett.91.133903
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
It is found that when a light beam travels through a slab of optically denser dielectric medium in air, the lateral shift of the transmitted beam can be negative. This is a novel phenomenon that is reversed in comparison with the geometrical optic prediction according to Snell's law of refraction. A Gaussian-shaped beam is analyzed in the paraxial approximation, and a comparison with numerical simulations is made. Finally, an explanation for the negativity of the lateral shift is suggested, in terms of the interaction of boundary effects of the slab's two interfaces with air.
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