Optical stealth technology is being developed to cope with high-sensitivity infrared image detectors and various guided detectors. Infrared stealth technology has remarkable performance; however, future advancements in multi-band stealth technology covering the entire optical frequency range, from visible to wide infrared, are key challenges regarding unmanned surveillance systems. Thus, a metal–semiconductor–metal (MSM) metasurface with Fabry–Pérot (F–P) and multiple plasmonic resonant modes is introduced to realize multiband stealth technology. Different colors are obtained for printing camouflage patterns in the visible range using localized surface plasmon modes in Al disks on an opaque Ge layer. The F–P resonance of the Ge layer induces a strong absorption of >92% at 1.06 µm, reducing the guidance signal of the infrared laser-guided detector. With an additional plasmonic resonance in the MSM metasurface, infrared signature reductions of >34%, >94.4%, and >97.7% are obtained for short-wave, mid-wave, and long-wave infrared bands, respectively.
|Journal||Advanced Optical Materials|
|Publication status||Published - 2022 Mar 18|
Bibliographical noteFunding Information:
This research was mainly supported by a National Research Foundation of Korea (NRF) grant funded by the Ministry of Science and ICT under project no. NRF‐2020M3F6A1081011‐1711119179. This research was also supported in part by the Ministry of SMEs and Startups (MSS, Korea under project no. 10437780).
© 2022 The Authors. Advanced Optical Materials published by Wiley-VCH GmbH
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics