15 February 2018 Mid-infrared coincidence measurements based on intracavity frequency conversion
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In the last years, the Mid Infrared (MIR) spectral region has attracted the attention of many areas of science and technology, opening the way to important applications, such as molecular imaging, remote sensing, free- space communication and environmental monitoring. However, the development of new sources of light, such as quantum cascade laser, was not followed by an adequate improvement in the MIR detection system, able to exceed the current challenges. Here we demonstrate the single-photon counting capability of a new detection system, based on efficient up-converter modules, by proving the correlated nature of twin photons pairs at about 3.1μm, opening the way to the extension of quantum optics experiments in the MIR.
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S. Piccione, S. Piccione, M. Mancinelli, M. Mancinelli, A. Trenti, A. Trenti, G. Fontana, G. Fontana, J. Dam, J. Dam, P. Tidemand-Lichtenberg, P. Tidemand-Lichtenberg, C. Pedersen, C. Pedersen, L. Pavesi, L. Pavesi, "Mid-infrared coincidence measurements based on intracavity frequency conversion ", Proc. SPIE 10516, Nonlinear Frequency Generation and Conversion: Materials and Devices XVII, 105161P (15 February 2018); doi: 10.1117/12.2305713; https://doi.org/10.1117/12.2305713

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