平面单色光入射到左手材料的布儒斯特角

根据普适菲涅尔公式,研究了平面单色光在一般的两种介质(介电常量和磁导率分别为ε1,μ1和ε2,μ2)界面反射光的偏振特性,给出了反射光的反射率R∥、R⊥分别为零时的对应布儒斯特角θB∥和θB⊥的普适表达式,且证明了对于光从右手介质入射到右手介质情况,布儒斯特角θB∥的普适表示式可简化到经典布儒斯特角θB的形式,θB⊥不存在;对于光从右手介质入射到左手材料情况,讨论了θB∥、θB⊥的存在条件。最后,在微波频段,依据理论分析选取合适的介质参数(ε,μ,n),由反射率R∥和R⊥随入射角变化的曲线,明显的看到存在布儒斯特角θB∥和θB⊥,使得R∥和R⊥皆为零。仿真结果与理论分析一致。

Brewster angle of plane light incident on left-handed materials

Based on the universal fresnel formula, the polarization properties of the reflected light on the interface of two dielectrics with （ε1,μ1） and（ε2,μ2） are analysed. The general expression to brewster angle θB// and θB⊥ corresponding to R//=0 and R⊥=0 is given respectively. Compared with the general condition that existence of θB//, and absence of θB⊥ in right-handed materials, the brewster angle θB∥ or θB⊥ can be found with appropriate parameters （ε,μ,n） in left-handed mate-rials. The numerical results are in accordance with theory analysis.