Diffraction-limited mid-infrared hyperspectral single-pixel imaging microscopy

Ivan Zorin; Paul Gattinger; Markus Brandstetter; Christian Rankl; Alexander Ebner

doi:10.1117/12.2673828

15 August 2023 Diffraction-limited mid-infrared hyperspectral single-pixel imaging microscopy

Ivan Zorin, Paul Gattinger, Markus Brandstetter, Christian Rankl, Alexander Ebner

Proceedings Volume 12618, Optical Measurement Systems for Industrial Inspection XIII; 126181M (2023) https://doi.org/10.1117/12.2673828
Event: SPIE Optical Metrology, 2023, Munich, Germany

Abstract

Mid-infrared (mid-IR) hyperspectral imaging is of great practical interest in various fields of science and industry due to its ability to provide spatially resolved label-free chemical information. However, the widespread adoption and advancement of mid-IR hyperspectral imaging are hindered by high costs and the specification lag of mid-IR focal plane arrays. In this contribution, we propose a method to circumvent this problem and thus demonstrate a solution for mid-IR hyperspectral imaging through the use of a single-pixel imaging paradigm involving a mid-IR enhanced digital micro-mirror device (DMD); as a light source, a high-brightness mid-IR supercontinuum source is exploited. The developed mid-IR hyperspectral microscope enables the acquisition of hyperspectral cubes with dimensions of 64x64 pixels and a spectral resolution of 120 nm accomplished within approximately 450 ms. The developed laser-based system provides rapid mid-IR hyperspectral imaging with a programmable scalable field of view and variable spatial resolution. Thus, this solution represents a cost-effective alternative to state-of-the-art mid-infrared imagers.

Conference Presentation

Citation Download Citation

Ivan Zorin, Paul Gattinger, Markus Brandstetter, Christian Rankl, and Alexander Ebner "Diffraction-limited mid-infrared hyperspectral single-pixel imaging microscopy", Proc. SPIE 12618, Optical Measurement Systems for Industrial Inspection XIII, 126181M (15 August 2023); https://doi.org/10.1117/12.2673828

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