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Updated: Jun 27, 2025

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
Published on: March 22, 2019
Claire E Nelmark1, Arnaldo L Serrano1
1Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana, USA.
Researchers developed a new achromatic lens for mid-infrared (MIR) hyperspectral imaging, improving spatial resolution beyond the diffraction limit. This innovation enhances chemical absorption imaging for complex systems.
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