Analysis of periodically patterned metallic nanostructures for infrared absorber

Sha Peng; Ying Yuan; Huabao Long; Runhan Liu; Dong Wei; Xinyu Zhang; Haiwei Wang; Changsheng Xie

doi:10.1117/12.2286473

19 February 2018 Analysis of periodically patterned metallic nanostructures for infrared absorber

Sha Peng, Ying Yuan, Huabao Long, Runhan Liu, Dong Wei, Xinyu Zhang, Haiwei Wang, Changsheng Xie

Proceedings Volume 10607, MIPPR 2017: Multispectral Image Acquisition, Processing, and Analysis; 106070E (2018) https://doi.org/10.1117/12.2286473
Event: Tenth International Symposium on Multispectral Image Processing and Pattern Recognition (MIPPR2017), 2017, Xiangyang, China

Abstract

With rapid advancement of infrared detecting technology in both military and civil domains, the photo-electronic performances of near-infrared detectors have been widely concerned. Currently, near-infrared detectors demonstrate some problems such as low sensitivity, low detectivity, and relatively small array scale. The current studies show that surface plasmons (SPs) stimulated over the surface of metallic nanostructures by incident light can be used to break the diffraction limit and thus concentrate light into sub-wavelength scale, so as to indicate a method to develop a new type of infrared absorber or detector with very large array. In this paper, we present the design and characterization of periodically patterned metallic nanostructures that combine nanometer thickness aluminum film with silicon wafer. Numerical computations show that there are some valleys caused by surface plasmons in the reflection spectrum in the infrared region, and both red shift and blue shift of the reflection spectrum were observed through changing the nanostructural parameters such as angle α and diameters D. Moreover, the strong E-field intensity is located at the sharp corner of the nano-structures.

Citation Download Citation

Sha Peng, Ying Yuan, Huabao Long, Runhan Liu, Dong Wei, Xinyu Zhang, Haiwei Wang, and Changsheng Xie "Analysis of periodically patterned metallic nanostructures for infrared absorber", Proc. SPIE 10607, MIPPR 2017: Multispectral Image Acquisition, Processing, and Analysis, 106070E (19 February 2018); https://doi.org/10.1117/12.2286473

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KEYWORDS

Nanostructures

Reflectivity

Surface plasmons

Infrared radiation

Infrared detectors

Sensors

Analytical research

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