Spectral and polarization sensing in short-wave infrared with thin-film photodiodes and optical metasurfaces

Vladimir Pejović; Bruno Figeys; Renaud Puybaret; Deniz Sabuncuoglu Tezcan; Itai Lieberman; David Cheyns; Roelof Jansen; Xavier Rottenberg; Paul Heremans; Pawel E. Malinowski

doi:10.1117/12.3022596

29 May 2024 Spectral and polarization sensing in short-wave infrared with thin-film photodiodes and optical metasurfaces

Vladimir Pejović, Bruno Figeys, Renaud Puybaret, Deniz Sabuncuoglu Tezcan, Itai Lieberman, David Cheyns, Roelof Jansen, Xavier Rottenberg, Paul Heremans, Pawel E. Malinowski

Author Affiliations +

Proceedings Volume 13083, SPIE Future Sensing Technologies 2024; 1308310 (2024) https://doi.org/10.1117/12.3022596
Event: SPIE Future Sensing Technologies, 2024, Yokohama, Japan

Abstract

The Short-Wave Infrared (SWIR) spectrum reveals distinct optical properties of many materials which considerably differ from their properties in the visible spectrum, creating unique imaging opportunities. SWIR imaging is usually done with InGaAs focal plane arrays which due to their low-volume manufacturing and high price remain inaccessible for many applications. Image sensors based on Colloidal Quantum Dot (CQD) photodiodes recently emerged as alternative that has a potential to enable high-volume manufacturing of SWIR image sensors. Multiple images in distinct SWIR bands often need to be captured, but due to the unique properties of CQD photodiodes, it is challenging to directly integrate optical filters on top of them for the purposes of spectral imaging. Here, we propose a strategy to overcome these challenges by integrating CQD photodiodes on top of optical metasurfaces. Patterned silicon nanostructures enable detection of spectrally and polarization sensitive SWIR light. The proposed device stack is compatible with thin-film processing and demonstrates a path towards affordable spectral imaging in SWIR which can impact many industrial, scientific and consumer domains.

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Vladimir Pejović, Bruno Figeys, Renaud Puybaret, Deniz Sabuncuoglu Tezcan, Itai Lieberman, David Cheyns, Roelof Jansen, Xavier Rottenberg, Paul Heremans, and Pawel E. Malinowski "Spectral and polarization sensing in short-wave infrared with thin-film photodiodes and optical metasurfaces", Proc. SPIE 13083, SPIE Future Sensing Technologies 2024, 1308310 (29 May 2024); https://doi.org/10.1117/12.3022596

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