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Rapid chemically selective 3D imaging in the mid-infrared with a Si-based camera

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arxiv 2103.01159 v1 pith:KQ6DXXN2 submitted 2021-03-01 physics.optics physics.ins-det

Rapid chemically selective 3D imaging in the mid-infrared with a Si-based camera

Eric O. Potma , David Knez , Yong Chen , Amanda Durkin , Alexander Fast , Mihaela Balu , Brenna Norton-Baker , Tommaso Baldacchini
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Rachel Martin Dmitry A. Fishman
This is my paper
classification physics.optics physics.ins-det
keywords imagingtomographiccameralightmaterialsmid-infraredsi-basedtomography
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The emerging technique of mid-infrared optical coherence tomography (MIR-OCT) takes advantage of the reduced scattering of MIR light in various materials and devices, enabling tomographic imaging at deeper penetration depths. Because of challenges in MIR detection technology, the image acquisition time is however significantly longer than for tomographic imaging methods in the visible/near-infrared. Here we demonstrate an alternative approach to MIR tomography with high-speed imaging capabilities. Through femtosecond non-degenerate two-photon absorption of MIR light in a conventional Si-based CCD camera, we achieve wide-field, high-definition tomographic imaging with chemical selectivity of structured materials and biological samples in mere seconds.

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  1. Single-Photon Infrared Imaging with a Silicon Camera Based on Long-Wavelength-Pumping Two-Photon Absorption

    physics.optics 2026-06 unverdicted novelty 6.0

    Experimental demonstration of single-photon sensitivity telecom imaging on silicon camera via long-wavelength-pumped non-degenerate two-photon absorption, reporting 30-fold counting rate enhancement and 1 photon/pixel...