Wavefront Sensor for spatial scan using the Hartmann-Shack method

Souza, Carlos Felipe G.; Cordeiro, Henrique A.; Monteiro, Davies William de Lima; Crespo, Telson Emmanuel O.; Abecassis, Ursula V.; Salles, Luciana P.

doi:10.1109/inscit.2016.7598190

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2020

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“…The APS is mainly used in image sensors for a vast number of sectors, as entertainment, communications, robotics, navigation, and others [2]. However, some applications do not demand imaging, but rather light detection in some level, such as motion detection, position sensitive detectors [3], wavefront sensors [4], tracking [5], lab-on-a-chip, Visible Light Communications, etc. Each one requires different designs and circuits and, consequently, different response characteristics [2] [6].…”

Section: Introductionmentioning

confidence: 99%

Design of Transfer-Gated CMOS Active Pixels Deploying Conventional PN-Junction Photodiodes

Costa

Souza

Monteiro

et al. 2020

JICS

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This paper presents a comparative study of six active pixel sensor (APS) schemes by means of simulations and experiments. The optical sensor used was a silicon photodiode with integrated electronics in a standard 0.35 µm CMOS technology. We analyzed how the transistor characteristics, such as channel resistance and leakage current, among others, can influence the APS response. Furthermore, we demonstrated how the choice of APS model affects sensor parameters such as output swing and fill factor, among others. The results presented and the understanding of the operational cycle of the CMOS transfer-gated APS aims at guiding better choices for different applications and the better transistor type in the project.

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