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Wavelength-tunable microbolometers with metamaterial absorbers
Abstract
Microbolometers are modified by metallic resonant absorber elements, leading to an enhanced responsivity at selectable wavelengths. The dissipative energy absorption of tailored metamaterials allows for engineering the response of conventional bolometer microbridges. The absorption peak position and height are determined by the geometry of the metamaterial. Square-shaped metal/dielectric/metal stacks as absorber elements show spectral resonances at wavelengths between 4.8 and 7.0 microm in accordance with numerical simulations. Total peak absorptions of 0.8 are obtained. The metamaterial modified bolometers are suitable for multispectral thermal imaging systems in the mid-IR and terahertz regime.
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Cited by
Water‐Resonator‐Based Metasurface: An Ultrabroadband and Near‐Unity Absorption
Song, Q., Zhang, W., Wu, P. C., Zhu, W., Shen, Z. X., Chong, P. H. J., Liang, Q. X., Yang, Z. C., Hao, Y. L., Cai, H., et al. (2017) · Advanced Optical Materials · doi:10.1002/adom.201601103 · Cited by 156
Metadata
- Authors
- Maier, T., & Brückl, H.
- Venue
- Optics Letters
- Publisher
- Optica Publishing Group
- Published
- 2009-09-30
- Volume
- 34
- Issue
- 19
- Pages
- 3012
- ISSN
- 0146-9592 (ISSN-L)
- 1539-4794
- OpenAlex
- W2138021594
- Cited by
- 199
- References
- 0
- FWCI
- 2.65
- Type
- journal article
- Language
- en
- Open access
- closed
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- Maier, T., & Brückl, H. (2009). Wavelength-tunable microbolometers with metamaterial absorbers. Optics Letters. https://doi.org/10.1364/ol.34.003012
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