Design and fabrication of a multiband compatible stealth film in green circumstance

A new film structure was designed using the transfer matrix method to broaden the stealth bands in the green circumstance. Compared with the previous theoretical result, the number of layers and thickness of the film were optimized, which made actual preparation more feasible. Then the sample was prepared and the stealth performance was tested in each band. In the visible and near-infrared bands, the film possesses spectral characteristics of green vegetation and its chromaticity is close to that of common green plants. In the middle and far infrared bands, the measured reflectance is 0.870 and 0.834 respectively. The experiment showed that the film could considerably reduce the infrared radiation. The measured reflectance of 1.06 and 10.6 μm laser is 0.096 and 0.166 respectively, which can remarkably lower the echo of the incident laser.