A high performance integrated readout circuit for wavefront sensors
| Autor: | Lucas Martins Chaves, Pablo Nunes Agra Belmonte, Davies William de Lima Monteiro, Ursula V. Abecassis, Luciana P. Salles |
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| Rok vydání: | 2020 |
| Předmět: |
Wavefront
Pixel Computer science General Chemical Engineering ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION General Engineering General Physics and Astronomy Integrated circuit Wavefront sensor Photodiode law.invention Readout integrated circuit CMOS law Electronic engineering General Earth and Planetary Sciences General Materials Science Image sensor General Environmental Science |
| Zdroj: | SN Applied Sciences. 2 |
| ISSN: | 2523-3971 2523-3963 |
| DOI: | 10.1007/s42452-020-03612-2 |
| Popis: | This work presents an integrated pixel topology that promises to offer superior performance in a Hartmann–Shack Wavefront Sensor (WFS) with an orthogonal array of Quad Cells serving as Position-Sensitive Detectors. The readout integrated circuit for each photodiode is fully compliant to any standard CMOS microelectronics technology and is advantageously tolerant to high background illumination levels whereas maintaining both high linearity and high sensitivity. To assess the operation of this pixel on the focal-plane array of the WFS, we developed a computational platform encompassing a full detection chain comprising wavefront sampling, photodetection, electronic circuitry and wavefront reconstruction. It couples an algorithm written in C to SPICE (Simulated Program with Integrated Circuits Emphasis). The platform is technology agnostic and flexible, enabling easy modification to represent different detection or reconstruction methods. The results obtained with the proposed pixel have been compared to those obtained with a conventional pixel in CMOS image sensor. |
| Databáze: | OpenAIRE |
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