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Title: Incoherent broadband mid-infrared detection with lanthanide nanotransducers
Authors: Liang, Liangliang
Wang, Chongwu
Chen, Jiaye
Wang, Qi Jie
Liu, Xiaogang
Keywords: Science::Physics::Optics and light
Engineering::Materials::Nanostructured materials
Issue Date: 2022
Source: Liang, L., Wang, C., Chen, J., Wang, Q. J. & Liu, X. (2022). Incoherent broadband mid-infrared detection with lanthanide nanotransducers. Nature Photonics, 16(10), 712-717.
Project: NRF-CRP19- 2017-01 
Journal: Nature Photonics
Abstract: Spectral conversion of mid-infrared (MIR) radiation to visible (VIS) and near-infrared (NIR) wavelengths is a fundamental technology for spectroscopy and imaging; however, current MIR-to-VIS/NIR conversion technology is limited to nonlinear optics with bulky crystals or resonant nanocavities. Here we report lanthanide-based MIR-to-NIR nanotransducers that enable broadband MIR sensing at room temperature by harnessing ratiometric luminescence changes. The ratiometric luminescence of lanthanide nanotransducers in the NIR region can be incoherently modulated by MIR radiation in the 4.5–10.8 µm wavelength range. Ratiometric modulation of luminescence enables a detection limit of ~0.3 nW × µm−2 with an internal quantum efficiency on the order of 3 × 10−3. The ratiometric sensor based on lanthanide nanotransducers does not require cryogenic cooling, polarization control, phase matching or nanoantenna design for light confinement. We also developed a camera with lanthanide nanotransducers, which enable room-temperature MIR imaging. We anticipate that these lanthanide nanotransducers can be extended to MIR light manipulation at the microscale for chip-integrated device applications.
ISSN: 1749-4885
DOI: 10.1038/s41566-022-01042-7
Schools: School of Electrical and Electronic Engineering 
Research Centres: Centre for OptoElectronics and Biophotonics (OPTIMUS) 
Centre for Disruptive Photonic Technologies (CDPT) 
Rights: © 2022 The Author(s), under exclusive licence to Springer Nature Limited. All rights reserved. This version of the article has been accepted for publication, after peer review and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org10.1038/s41566-022-01042-7.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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