Mixing Properties of Room Temperature Patch-Antenna Receivers in a Mid-Infrared ( ≈ 9 µm) Heterodyne System - Laboratoire Matériaux et Phénomènes Quantiques Accéder directement au contenu
Article Dans Une Revue Laser and Photonics Reviews Année : 2020

Mixing Properties of Room Temperature Patch-Antenna Receivers in a Mid-Infrared ( ≈ 9 µm) Heterodyne System

Résumé

A room-temperature mid-infrared (= 9 µm) heterodyne system based on high-performance unipolar optoelectronic devices is presented. The local oscillator (LO) is a quantum cascade laser (QCL), while the receiver is an antenna coupled quantum well infrared photodetector optimized to operate in a microcavity configuration. Measurements of the saturation intensity show that these receivers have a linear response up to very high optical power, an essential feature for heterodyne detection. By providing an accurate passive stabilization of the LO, the heterodyne system reaches at room temperature the record value of noise equivalent power (NEP) of 30 pW at 9 µm and in the GHz frequency range. Finally, it is demonstrated that the injection of microwave signal into the receivers shifts the heterodyne beating over the large bandwidth of the devices. This mixing property is a unique valuable function of these devices for signal treatment in compact QCL-based systems.
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Dates et versions

hal-02430650 , version 1 (07-01-2020)

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Azzurra Bigioli, Djamal Gacemi, Daniele Palaferri, Yanko Todorov, Angela Vasanelli, et al.. Mixing Properties of Room Temperature Patch-Antenna Receivers in a Mid-Infrared ( ≈ 9 µm) Heterodyne System. Laser and Photonics Reviews, In press, ⟨10.1002/lpor.201900207⟩. ⟨hal-02430650⟩
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