Shvartsburg Alexander B, Petite Guillaume
Central Design Bureau for Unique Instrumentation of the Russian Academy of Science, Butlerov Strasse 15, 117342 Moscow, Russia.
Opt Lett. 2006 Apr 15;31(8):1127-9. doi: 10.1364/ol.31.001127.
We analyze the optical (or microwave) tunneling properties of electromagnetic waves passing through thin films presenting a specific index profile that provides a cutoff frequency when the films are used below this frequency. We show that, contrary to the usual case of a square index profile, where tunneling is accompanied by a strong attenuation of the wave due to reflection, such films present the possibility of reflectionless tunneling, where the incoming intensity is totally transmitted.
我们分析了电磁波通过具有特定折射率分布的薄膜时的光学（或微波）隧穿特性，当在低于该频率下使用这些薄膜时，该折射率分布会提供一个截止频率。我们表明，与通常的方形折射率分布情况相反，在方形折射率分布中，隧穿会伴随着由于反射导致的波的强烈衰减，而此类薄膜呈现出无反射隧穿的可能性，即入射强度完全透射。
