Photon counting LIDAR at 23µm wavelength with superconducting nanowires Article Swipe

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Photon counting Lidar Detector Optics Optical parametric oscillator Nanowire Wavelength Optoelectronics Absorption (acoustics) Photon Laser Materials science Infrared Near-infrared spectroscopy Photonics Physics

Gregor G. Taylor , D. Morozov , Nathan R. Gemmell , Kleanthis Erotokritou , Shigehito Miki , Hirotaka Terai , Robert H. Hadfield ·

YOU? · · 2019 · Open Access · · DOI: https://doi.org/10.1364/oe.27.038147 · OA: W2996539835

In this work, we show a proof-of-principle benchtop single-photon light detection and ranging (LIDAR) depth imager at 2.3µm, utilizing superconducting nanowire single-photon detectors (SNSPDs). We fabricate and fiber-couple SNSPDs to exhibit enhanced photon counting performance in the mid-infrared. We present characterization results using an optical parametric oscillator source and deploy these detectors in a scanning LIDAR setup at 2.3µm wavelength. This demonstrates the viability of these detectors for future free-space photon counting applications in the mid-infrared where atmospheric absorption and background solar flux are low.