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9 March 2022 Quantum cascade detectors: A 9-μm device optimized for low-attenuation free-space optical communication
Georg Marschick, Mauro David, Alexandre Delga, Nikola Opacak, Benedikt Schwarz, Mathurin Lagree, Thomas Poletti, Axel Evirgen, Bruno P. Gerard, Gottfried Strasser, Borislav Hinkov
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Proceedings Volume PC12021, Novel In-Plane Semiconductor Lasers XXI; PC120210K (2022) https://doi.org/10.1117/12.2609902
Event: SPIE OPTO, 2022, San Francisco, California, United States
Abstract
We present a novel InGaAs/InAlAs/InP quantum cascade detector (QCD) operating in the long wave infrared (LWIR) range, crucial for the exploitation of new free-space optical telecommunication channels at wavelengths between 8-12 µm. The comparison of differently sized detector ridges, processed on substrates with a 15-period as well as a single-period design, allows a characterization of the spectral photocurrent and a comparison of their performance in terms of sensitivity, spectral responsivity, detector noise etc. The goal is to distinguish design guidelines for the best candidate to establish a monolithic-integrated heterodyne detection system, able to secure high-speed and low-noise free-space data transmission.
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Georg Marschick, Mauro David, Alexandre Delga, Nikola Opacak, Benedikt Schwarz, Mathurin Lagree, Thomas Poletti, Axel Evirgen, Bruno P. Gerard, Gottfried Strasser, and Borislav Hinkov "Quantum cascade detectors: A 9-μm device optimized for low-attenuation free-space optical communication", Proc. SPIE PC12021, Novel In-Plane Semiconductor Lasers XXI, PC120210K (9 March 2022); https://doi.org/10.1117/12.2609902
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KEYWORDS
Sensors
Free space optical communications
Quantum communications
Quantum cascade lasers
Long wavelength infrared
Modulation
Neodymium
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