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Mid-IR spectroscopy with NIR grating spectrometers
Paul Kaufmann, Helen M. Chrzanowski, Aron Vanselow +1
Mid-infrared (mid-IR) spectroscopy is a crucial workhorse for a plethora of analytical applications and is suitable for diverse materials, including gases, polymers or biological t…
Talbot self-imaging and two-photon interference in ring-core fibers
Matias Eriksson, Benjamin A. Stickler, Lea Kopf +5
Wave propagation on the surface of cylinders exhibits interferometric self imaging, much like the Talbot effect in the near-field diffraction at periodic gratings. We report the ex…
Mid-Infrared Microscopy via Position Correlations of Undetected Photons
Inna Kviatkovsky, Helen M. Chrzanowski, Sven Ramelow
Quantum imaging with undetected photons (QIUP) has recently emerged as a new powerful imaging tool. Exploiting the spatial entanglement of photon pairs, it allows decoupling of the…
Low random duty-cycle errors in periodically-poled KTP revealed by sum-frequency generation
Felix Mann, Helen M. Chrzanowski, Sven Ramelow
Low-noise quantum frequency conversion in periodically-poled nonlinear crystals has proved challenging when the pump wavelength is shorter than the target wavelength. This is - at…