Performances of a HGCDTE APD Based Detector with Electric Cooling for 2-μm DIAL/IPDA Applications
1 LMD, École Polytechnique/CNRS, France
2 LETI, CEA - Campus Minatech, France
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Published online: 7 June 2016
In this work we report on design and testing of an HgCdTe Avalanche Photodiode (APD) detector assembly for lidar applications in the Short Wavelength Infrared Region (SWIR : 1,5 - 2 μm). This detector consists in a set of diodes set in parallel -making a 200 μm large sensitive area- and connected to a custom high gain TransImpedance Amplifier (TIA). A commercial four stages Peltier cooler is used to reach an operating temperature of 185K. Crucial performances for lidar use are investigated : linearity, dynamic range, spatial homogeneity, noise and resistance to intense illumination.
© Owned by the authors, published by EDP Sciences, 2016
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