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Proceedings Paper • Open Access

HgCdTe APDs detector developments at CEA/Leti for atmospheric lidar and free space optical communications
Author(s): Johan Rothman; Pierre Bleuet; Julie Abergel; Sylvain Gout; Gilles Lasfargues; Lydie Mathieu; Jean-Alain Nicolas; Jean-Pierre Rostaing; Stephanie Huet; Pierre Castelein; Kévin Aubaret; Olivier Saint-Pé

Paper Abstract

HgCdTe APD detector modules telecommunication are developed at CEA/Leti for atmospheric LIDAR and free space optical (FSO). The development is driven by the design and manufacture of generic sub-assemblies that can be adapted in each detector module to meet the specific detector requirements of each application. The optimization of such subassemblies is detailed in perspective of the challenges that are set by the specifications for detector modules currently developed for atmospheric LIDAR, in the scope of an R&T CNES project for Airbus and an H2020 project HOLDON, and FSO, in the scope of an ESA project and in collaboration with Mynaric Lasercom GmbH. Two detector modules have recently been delivered to Airbus DS for extensive LIDAR simulation tests. Initial characterization of these modules shows that the input noise, NEP=10-15fW/√Hz (5 photons rms) have been reduced by a factor three compared to previously developed large area detectors although the bandwidth have been increased to 180 MHz in order to respond to the requirements of high spatial depth resolution. The temporal remanence was 10-4 at 200 ns after the detection of short light impulse, which is compatible with demanding LIDAR applications such as bathymetric profiling.

Paper Details

Date Published: 12 July 2019
PDF: 14 pages
Proc. SPIE 11180, International Conference on Space Optics — ICSO 2018, 111803S (12 July 2019); doi: 10.1117/12.2536055
Show Author Affiliations
Johan Rothman, MINATEC (France)
Pierre Bleuet, Univ. Grenoble Alpes, CEA-LETI (France)
Julie Abergel, Univ. Grenoble Alpes, CEA-LETI (France)
Sylvain Gout, Univ. Grenoble Alpes, CEA-LETI (France)
Gilles Lasfargues, Univ. Grenoble Alpes, CEA-LETI (France)
Lydie Mathieu, Univ. Grenoble Alpes, CEA-LETI (France)
Jean-Alain Nicolas, Univ. Grenoble Alpes, CEA-LETI (France)
Jean-Pierre Rostaing, Univ. Grenoble Alpes, CEA-LETI (France)
Stephanie Huet, Univ. Grenoble Alpes, CEA-LETI (France)
Pierre Castelein, Univ. Grenoble Alpes, CEA-LETI (France)
Kévin Aubaret, Airbus Defence and Space (France)
Olivier Saint-Pé, Airbus Defence and Space (France)

Published in SPIE Proceedings Vol. 11180:
International Conference on Space Optics — ICSO 2018
Zoran Sodnik; Nikos Karafolas; Bruno Cugny, Editor(s)

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