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Proceedings Paper

Nonlinear interferometers for broadband mid-infrared spectroscopy
Author(s): Chiara Lindner; Sebastian Wolf; Jens Kießling; Frank Kühnemann
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Paper Abstract

Mid-infrared spectroscopy is one of the most important techniques in chemical analysis. However, the detectors for the mid-infrared range suffer from lower specific detectivities in comparison to their visible counterparts, cost more and often require cryogenic cooling. Nonlinear interferometers allow measuring mid-infrared spectra by detecting only visible light using the induced coherence effect. In our work, we realize a nonlinear interferometer designed for broadband mid-infrared spectra with high resolution, which is easily tunable, and in analogy to classical Fourier transform infrared (FTIR) spectrometers requires no additional spectral selection.

Paper Details

Date Published: 2 March 2020
PDF: 7 pages
Proc. SPIE 11264, Nonlinear Frequency Generation and Conversion: Materials and Devices XIX, 112641D (2 March 2020); doi: 10.1117/12.2545883
Show Author Affiliations
Chiara Lindner, Fraunhofer-Institut für Physikalische Messtechnik IPM (Germany)
Sebastian Wolf, Fraunhofer-Institut für Physikalische Messtechnik IPM (Germany)
Jens Kießling, Fraunhofer-Institut für Physikalische Messtechnik IPM (Germany)
Frank Kühnemann, Fraunhofer-Institut für Physikalische Messtechnik IPM (Germany)


Published in SPIE Proceedings Vol. 11264:
Nonlinear Frequency Generation and Conversion: Materials and Devices XIX
Peter G. Schunemann; Kenneth L. Schepler, Editor(s)

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