Effects of total internal reflection on the reflectivities of dielectric gratings
Effects of total internal reflection on the reflectivities of dielectric gratings
复制标题
全内反射对介质光栅反射率的影响
DOI：
10.1364/josaa.9.002218
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发表时间：
1992
影响因子：
1.9
通讯作者：
M. Nieto
中科院分区：
文献类型：
--
作者：
D. Maystre;M. Nieto
我们指出，在将介质与真空分离的波纹界面上，从介质入射的电磁波相互作用中出现的全内反射现象，即使在与界面平均平面的入射角远低于临界角时，也会产生非常大的反射率（接近100%）。对正弦波的计算机模拟表明，在正确选择光栅周期和振幅以及入射波的波长时，在零反射阶上的效率为90%。火焰效果，类似于那些发生在金属光栅，也出现。在这种相互作用下产生的共振方面对这种现象进行了分析。
We point out that the phenomenon of total internal reflection appearing on interaction of an electromagnetic wave, incident from a dielectric at the corrugated interface separating this medium from vacuum, can give rise to very large reflectivities (close to 100%), even at angles of incidence with the mean plane of the interface that are well below the critical angle. Computer simulations for sinusoidal corrugations show >90% efficiency in the zeroth reflected order for an appropriate choice of the grating period and amplitude and of the wavelength of the incident wave at normal incidence. Blaze effects, analogous to those taking place in metallic gratings, also appear. An analysis of this phenomenon in terms of resonances created under this interaction is presented.