B4.1 - Wavelength-Selective Metamaterial Absorber for Thermal Detectors
- AMA Conferences 2015
2015-05-19 - 2015-05-21
- Proceedings SENSOR 2015
- B4 - Sensor Materials
- A. Shoshi, H. Brückl - Danube University Krems, Wr. Neustadt (Austria), W. Reichl, G. Niessner - E+E Elektronik GmbH, Engerwitzdorf (Austria), T. Maier - Austrian Institute of Technology GmbH, Vienna (Austria)
- 251 - 256
The absorption properties of trilayer and more sophisticated multilayer metamaterial structures are analyzed by numerical simulations. The dissipative electromagnetic energy absorption of tailored metamaterials can be utilized to improve the performance of thermal detectors. The absorption properties such as absorption resonance frequency, amplitude and spectral bandwidth depend on the geometry of the metamaterials. Here, we consider isotropic disk-shaped components of Al- and Al/AlNstacked absorber elements. They show spectral resonances at wavelengths between 2 and 6 μm, reaching near unity absorption with narrow bandwidths ranging from 0.45 μm to 1.05 μm. Multilayered metamaterial structures show multiband perfect absorption which are for simultaneous multispectral infrared imaging.