Nonlinear interferometers for Fourier-transform infrared spectroscopy with visible light

Chiara Lindner; Jachin Kunz; Sebastian Wolf; Jens Kiessling; Frank Kühnemann

doi:10.1117/12.2578278

5 March 2021 Nonlinear interferometers for Fourier-transform infrared spectroscopy with visible light

Chiara Lindner, Jachin Kunz, Sebastian Wolf, Jens Kiessling, Frank Kühnemann

Proceedings Volume 11670, Nonlinear Frequency Generation and Conversion: Materials and Devices XX; 1167010 (2021) https://doi.org/10.1117/12.2578278
Event: SPIE LASE, 2021, Online Only

Abstract

Nonlinear interferometers based on non-degenerate spontaneous parametric down-conversion (SPDC) create a link between separate spectral ranges. This allows for measurements in remote spectral regions while detecting light in easily accessible wavelengths. In our work, we use periodically poled lithium niobate to create correlated signal (visible or near-infrared) and idler (mid-infrared) photon pairs. Using a nonlinear interferometer in Michelson geometry, we obtain broadband mid-infrared spectra from light detected with a silicon avalanche photodiode. Combining the nonlinear interferometer with a measurement scheme in close analogy to classical Fourier-transform infrared spectroscopy allows for sub-wavenumber spectral resolution, which opens up possibilities for applications such as precise spectroscopic gas analysis.

Conference Presentation

Citation Download Citation

Chiara Lindner, Jachin Kunz, Sebastian Wolf, Jens Kiessling, and Frank Kühnemann "Nonlinear interferometers for Fourier-transform infrared spectroscopy with visible light", Proc. SPIE 11670, Nonlinear Frequency Generation and Conversion: Materials and Devices XX, 1167010 (5 March 2021); https://doi.org/10.1117/12.2578278

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