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Dynamic-quenching of a single-photon avalanche photodetector using an adaptive resistive switch
- Source :
- Nature Communications, 13, 1-12, 2022
- Publication Year :
- 2021
-
Abstract
- One of the most common approaches for quenching single-photon avalanche diodes is to use a passive resistor in series with it. A drawback of this approach has been the limited recovery speed of the single-photon avalanche diodes. High resistance is needed to quench the avalanche, leading to slower recharging of the single-photon avalanche diodes depletion capacitor. We address this issue by replacing a fixed quenching resistor with a bias-dependent adaptive resistive switch. Reversible generation of metallic conduction enables switching between low and high resistance states under unipolar bias. As an example, using a Pt/Al2O3/Ag resistor with a commercial silicon single-photon avalanche diodes, we demonstrate avalanche pulse widths as small as ~30 ns, 10x smaller than a passively quenched approach, thus significantly improving the single-photon avalanche diodes frequency response. The experimental results are consistent with a model where the adaptive resistor dynamically changes its resistance during discharging and recharging the single-photon avalanche diodes.
- Subjects :
- Physics - Instrumentation and Detectors
Subjects
Details
- Database :
- arXiv
- Journal :
- Nature Communications, 13, 1-12, 2022
- Publication Type :
- Report
- Accession number :
- edsarx.2105.11454
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1038/s41467-022-29195-7