Free Running Single Photon Detection based on a negative feedback InGaAs APD
arXiv:1204.4594 · doi:10.1080/09500340.2012.690050
Abstract
InGaAs/InP-based semiconductor avalanche photodiode are usually employed for single-photon counting at telecom wavelength. However they are affected by afterpulsing which limits the diode performance. Recently, Princeton Lightwave has commercialised a diode integrating monolithically a feedback resistor. This solution effectively quenches the avalanche and drastically reduces afterpulsing. Here, we report the development and characterization of a detector module based on this diode, implementing an active hold-off circuit which further reduces the afterpulsing and notably improves the detector performances. We demonstrate free-running operation with 600 Hz dark count rate at 10% detection efficiency. We also improved the standard double-window technique for the afterpulsing characterization. Our algorithm implemented by a FPGA allows to put the APD in a well-defined initial condition and to measure the impact of the higher order afterpulses.
18 pages, 15 figures. Submitted to Journal of Modern Optics
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- Compact free-running InGaAs/InP single-photon detector with 40% detection efficiency and 2.3 kcps dark count rate
- Correcting for accidental correlations in saturated avalanche photodiodes
- Liquid-nitrogen cooled, free-running single-photon sensitive detector at telecommunication wavelengths