FastGated-SPAD
Description
The FastGatedSPAD module is a compact detection module capable of gating a silicon SPAD for wide dynamic range optical measurement. The module includes a fast pulse generator, with gating transitions below 200 ps at repetition rates up to 80 MHz, with fully programmable ON time and excess bias. The differential front-end electronics picks up the avalanche pulse with low timing jitter. The module can be operated also in free-running mode, with the SPAD always ON. The main feature of the module is the possibility to increase the Dynamic Range of TCSPC systems thanks to a fast OFF-ON transition. Thus, weak signals can be extracted out of a huge background by enabling the detector only in well-defined time-windows. The good photon detection efficiency and timing resolution are obtained through both the use of epitaxial SPAD and the microwave layout optimized to reduce the effect of voltage oscillations following the fast gate transitions. The FastGatedSPAD module is controlled through a PC software interface where it is possible to set all the relevant gate parameters (int./ext. trigger, gate frequency, gate width) and all the detector’s parameters: temperature, excess bias and hold-off time. In this way, it is possible to adjust the detector performances in terms of DCR, hold-off time and photon detection efficiency, in order to properly match the requirements of the user application.
FastGated-SPAD
Specifications |
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|---|---|
| Active Diameter: | 0.05 mm |
| Peak Quantum Efficiency: | 55 % |
| Spectral Range: | 400-1000nm |
Features
50µm active sensing area diameter
Free Space an Fiber Receptacle versions available
Gate rise-time: < 200 ps
Gate repetition frequency: up to 80 MHz
Free-running mode available
Uniform performances all-over the active area
Peltier-cooled
Timing jitter: < 50 ps
Detection efficiency: 50% @ 400 nm, 5% @ 800 nm
Applications
Time resolved spectroscopy
Functional brain imaging
Optical molecular imaging
Gated STED
FLIM - Fluorescence Lifetime IMaging
FCS - Fluorescence Correlation Spectroscopy
DOT - Diffuse Optical Tomography
Optical Testing of integrated circuits
Metrology by Time of Flight measurements
Fibre optics characterization
OTDR – Optical Time-Domain Reflectometry
LIDAR and ranging
Quantum Cryptography
Quantum Optics
Single-photon source characterisation
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How to order?
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Ships from:
Canada
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On FindLight:
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Frequently Asked Questions
Yes, the module can be operated in free-running mode with the SPAD always ON.
The FastGatedSPAD module is used for wide dynamic range optical measurement.
The gate rise time of the module is less than 200 ps.
The timing accuracy of the module is less than 50 ps FWHM.
The PC software interface allows the user to set all the relevant gate parameters (int./ext. trigger, gate frequency, gate width) and all the detector’s parameters: temperature, excess bias, and hold-off time.