隐身反传感技术中的陷光机理讨论-隐身飞机揭秘

Discussion on the light trapping mechanism in stealth anti-sensing techniques–A disclose of stealth planes

介绍了将电磁波在固体中传播的反射和吸收规律应用于雷达和红外等隐身反传感技术的原理,起到阐明陷光机理的作用。隐身反传感材料往往由多层膜组成,表面是透波膜或透光膜,具有低反射率,底层应是吸波膜或吸光膜,共同起到雷达和红外隐身反传感作用。介绍了如何选择表面膜和底膜,与隐身反传感膜的介电常数、空隙度、自由载流子及振子浓度、半导体种类及其禁带宽度等关系,以达到最佳隐身反传感效果。还介绍了陷光膜和光子晶体在隐身反传感技术中的应用。

The principle is introduced how to apply the reflectivity and absorption laws of electromagnetic wave propagating in solid objects to stealth anti-sensing techniques such as radar and infrared light, so the effect of stealth light trapping mechanism is illuminated. Stealth anti-sensing materials are always composed of multiply films. The surface films are transparent ones with lower reflectivity factors and the bottom films are absorption ones either for radar or for infrared light. It is introduced how to select the surface films and bottom films, focusing on the relations to their dielectric constants, air-holes （cavity）, densities of free carries and vibrators, sorts and forbidden gaps of semiconductors in order to get the best stealth anti-sensing effect. In addition, the applications of light trapping films and photon crystals in stealth anti- sensing techniques are introduced.