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arXiv · 2110.01511

Mid-Infrared Photon-Pair Generation in AgGaS$_2$

Mohit Kumar·Pawan Kumar·Andres Vega·Maximilian A. Weissflog·Thomas Pertsch·Frank Setzpfandt
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Abstract

We demonstrate non-degenerate photon-pair generation by spontaneous parametric down conversion in a silver gallium sulfide AgGaS$_2$ crystal. By tuning the pump wavelength, we achieve phase matching over a large spectral range. This allows to generate idler photons in the mid-infrared spectral range above 6 $\mu m$ wavelength with corresponding signal photons in the visible. Also, we show photon pair generation with broad spectral bandwidth. These results are a valuable step towards the development of quantum imaging and sensing techniques in the mid-infrared.

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Mohit Kumar, Pawan Kumar, Andres Vega, Maximilian A. Weissflog, Thomas Pertsch, Frank Setzpfandt. 2021-10-04. Mid-Infrared Photon-Pair Generation in AgGaS$_2$. https://doi.org/10.1063/5.0074054

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