3 May 2010 Advances in HgCdTe APDs and LADAR receivers
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Abstract
Raytheon is developing NIR sensor chip assemblies (SCAs) for scanning and staring 3D LADAR systems. High sensitivity is obtained by integrating high performance detectors with gain i.e. APDs with very low noise Readout Integrated Circuits. Unique aspects of these designs include: independent acquisition (non-gated) of pulse returns, multiple pulse returns with both time and intensity reported to enable full 3D reconstruction of the image. Recent breakthrough in device design has resulted in HgCdTe APDs operating at 300K with essentially no excess noise to gains in excess of 100, low NEP <1nW and GHz bandwidths and have demonstrated linear mode photon counting. SCAs utilizing these high performance APDs have been integrated and demonstrated excellent spatial and range resolution enabling detailed 3D imagery both at short range and long ranges. In this presentation we will review progress in high resolution scanning, staring and ultra-high sensitivity photon counting LADAR sensors.
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Steven Bailey, Steven Bailey, William McKeag, William McKeag, Jinxue Wang, Jinxue Wang, Michael Jack, Michael Jack, Farzin Amzajerdian, Farzin Amzajerdian, } "Advances in HgCdTe APDs and LADAR receivers", Proc. SPIE 7660, Infrared Technology and Applications XXXVI, 76603I (3 May 2010); doi: 10.1117/12.859186; https://doi.org/10.1117/12.859186
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