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Note:: Gesehen am 07.07.20; Open Access; Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International

Author:: Del Balzo, Livia; Gacemi, Djamal; Baik, Jihye; Martin, Bruno; Evirgen, Axel; Beaudoin, Grégoire; Pantzas, Konstantinos; Sagnes, Isabelle; Vasanelli, Angela; Sirtori, Carlo

Title:: Hybrid LiDAR–radar at 9 μm wavelength with unipolar quantum optoelectronic devices

Information:: Abstract: Unipolar quantum optoelectronics is emerging as a promising semiconductor platform for developing mid-infrared applications, particularly spectroscopy and free-space communications. In this work, we present a proof of principle of a unipolar quantum optoelectronic hybrid Lidar – Radar for the measurement of the position and speed of a moving target. The system operates at 9 µm wavelength and is composed of a quantum cascade laser, a Stark modulator and a metamaterial quantum well infrared photodetector. The laser amplitude is modulated with a chirped radio-frequency subcarrier, and the backscattered light is detected coherently on the metamaterial quadratic receiver. With our system we have measured a ranging distance of 150 cm with an intrinsic resolution of 15 cm. Our demonstration is a first milestone towards combined communication and ranging systems in a transparency window of the atmosphere.

Keywords:: quantum cascade laser ; unipolar device ; mid-infrared ; LiDAR ; Stark modulator ; quantum well infrared photodetector