Herbst, Florian GerhardFlorian GerhardHerbstElsen, FlorianFlorianElsenJungbluth, BerndBerndJungbluthHoffmann, Hans-DieterHans-DieterHoffmannHaefner, Constantin LeonConstantin LeonHaefner2022-03-142022-03-142021https://publica.fraunhofer.de/handle/publica/41153010.1117/12.2578639Spontaneous parametric down-conversion can produce pairs of entangled photons with very different wavelengths. Using SPDC, the scheme of Imaging with Undetected Photons promises to be a versatile tool to facilitate imaging in various spectral ranges and various interferometer designs and geometries. Here, we tackle the task of Imaging with Undetected Photons with a Mach-Zehnder-type Interferometer in MIR. With imaging achieved in a preliminary setup, we investigate the limitations set by nonlinear conversion efficiencies, optical resolution, laser power, and fluorescence of optics on our way to Imaging with Undetected Photons in MIR.enPhotonsNonlinear crystalsCrystalsInterferometers621conference paper