Abstract
The paper presents a camera comprising 512 × 128 pixels capable of single-photon detection and gating with a maximum frame rate of 156 kfps. The photon capture is performed through a gated single-photon avalanche diode that generates a digital pulse upon photon detection and through a digital one-bit counter. Gray levels are obtained through multiple counting and accumulation, while time-resolved imaging is achieved through a 4-ns gating window controlled with subnanosecond accuracy by a field-programmable gate array. The sensor, which is equipped with microlenses to enhance its effective fill factor, was electro-optically characterized in terms of sensitivity and uniformity. Several examples of capture of fast events are shown to demonstrate the suitability of the approach.
Original language | English |
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Article number | 1005 |
Pages (from-to) | 1-15 |
Number of pages | 15 |
Journal | Sensors |
Volume | 16 |
Issue number | 7 |
DOIs | |
Publication status | Published - 29 Jun 2016 |
Keywords
- single-photon avalanche diode
- SPAD
- fluorescence
- fluorescence lifetime imaging microscopy
- FLIM
- fluorescence correlation spectroscopy
- FCS
- OA-Fund TU Delft