Abstract
In this paper, we design a metamaterial film with multilayer structure for laser-compatible infrared stealth. The multilayer film structure is formed by stacking the high-temperature resistant metal Mo and Ge. Numerical results indicate that the absorptivity is 80.42 % and 96.92 % at 1.06μm and 1.55μm, respectively and the average emissivity of 35μm and 812μm atmospheric window bands are lower than 20 %. At the same time, there is a wide-band resonant absorption peak at the 5 ∼ 8 μm non-atmospheric window band which is beneficial for radiant heat dissipation. The effects of film thickness, polarization of incident light as well as incident angles on stealth performance are studied. The designed structure is only composed of four layers, which is easy to fabricate by film deposition and to realize large-scale integration, and has a very broad application prospect.
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