介质界面反射和折射电磁波的偏转

DEFLECTION OF REFLECTED AND REFRACTED ELECTROMAGNETIC WAVES ON INTERFACE OF MEDIA

将电磁场的边界条件转化为用四维矢势表示的约束条件 ,视边界附近的电磁场为受约束的电磁系统 ,对其广义作用量进行了广义变分处理 ,讨论了介质界面电磁波的反射和折射问题 ;从约束系统的变换性质推导出反射和折射电磁波的能量中心移动方程 ,证明了纵向移动和横向移动是存在的 ,分析了其产生机理 ;推导了反射和折射电磁波角动量的变化关系式 ,分析了反射和折射波偏离入射面的可能性 ;

We have changed the independent boundary conditions of the electromagnetic field on the interface into the constraint conditions discribed by the four-potential,considered the electromagnetic system near the interface of the constraint electromagnetic system.and carried out the generalized variation on the generalized action of the constraint electromagnetic system,and discussed the problems of reflection and refraction of electromagnetic waves on the interface of dielectric media.From the transformation properties of the constrained system under the transformation of coordinates,we have deduced the equation of motion of the center of energy of the reflected and refracted electromagnetic waves,proved that the longitudinal and transverse shift is in existence,and analyzed the mechanism.We have also induced the change of the third component of the orbital angular momentum of the electromagnetic waves,anlyzed the possibility of deflection of the reflected and refracted electromagnetic waves on the interface of media from incident plane,and deduced the relations between the angles of deflection and the longitudinal and transverse shifts of centre of the reflected and refracted waves.