Presentation + Paper
26 May 2020 Low capacitance SWIR photodetectors for high speed sensing applications
Wei Zhang, Michael J. Evans, John Liobe, Wei Huang, Paul Bereznycky, Devon Wang, Doug Malchow, Scott Endicter, William J. Gustus, Manuel Morales, Michael Caro, Sean Houlihan
Author Affiliations +
Abstract
Sensors Unlimited Inc. (SUI), a Collins Aerospace Company, has developed a large-area, high-speed, short-wave infrared (SWIR) focal plane array (FPA) to meet the field-of-view (FOV) and bandwidth requirements of LiDAR applications. Modifications to SUI’s standard InGaAs photodiode array (PDA), include junction shape, dielectric thickness, and contact metallization. These changes allow for a reduction in the effective capacitance seen by the hybridized FPA’s readout integrated circuit (ROIC) while preserving the epitaxial structure that ensures the company’s industry-leading dark current. Compared to SUI’s standard device, significant capacitance reductions have been demonstrated. Enhancements of laser pulse detection performance arising from the capacitance improvement, and suitability of the resulting device for implementation in LiDAR systems, will be discussed.
Conference Presentation
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wei Zhang, Michael J. Evans, John Liobe, Wei Huang, Paul Bereznycky, Devon Wang, Doug Malchow, Scott Endicter, William J. Gustus, Manuel Morales, Michael Caro, and Sean Houlihan "Low capacitance SWIR photodetectors for high speed sensing applications", Proc. SPIE 11407, Infrared Technology and Applications XLVI, 114070C (26 May 2020); https://doi.org/10.1117/12.2560713
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KEYWORDS
Capacitance

Metals

Diffusion

Sensors

Dielectrics

Readout integrated circuits

Personal digital assistants

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