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6 October 2023 Rapid hyperspectral mid-IR imaging with non-degenerate two-photon absorption
Eric O. Potma, David Knez, Dmitry A. Fishman
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Proceedings Volume PC12681, Ultrafast Nonlinear Imaging and Spectroscopy XI; PC126810A (2023) https://doi.org/10.1117/12.2678240
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States
Abstract
Spectral imaging in the mid-infrared (MIR) range provides simultaneous morphological and chemical information of a wide variety of samples. However, current MIR technologies struggle to produce high-definition images over a broad spectral range at acquisition rates that are compatible with real-time processes. We present a novel spectral imaging technique based on non-degenerate two-photon absorption of temporally chirped optical MIR pulses. This new approach avoids complex image processing or reconstruction and enables high-speed acquisition of spectral data cubes at high pixel density in under a second.
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Eric O. Potma, David Knez, and Dmitry A. Fishman "Rapid hyperspectral mid-IR imaging with non-degenerate two-photon absorption", Proc. SPIE PC12681, Ultrafast Nonlinear Imaging and Spectroscopy XI, PC126810A (6 October 2023); https://doi.org/10.1117/12.2678240
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KEYWORDS
Absorption
Mid-IR
Hyperspectral imaging
Two photon imaging
Image processing
Imaging spectroscopy
Data acquisition
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