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Proceedings Paper

100 Mcount/s InGaAs/InP single-photon detector
Author(s): Carmelo Scarcella; Gianluca Boso; Fabio Acerbi; Alessandro Ruggeri; Adriano Della Frera; Alberto Tosi
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Paper Abstract

Recently there has been considerable effort to develop photon-counting detectors for the near-infrared wavelength range (up to 1700 nm). However, a practical detector, which can be employed in many real applications and has both high count rates and low noise, is still not available. Here we show a novel technique to operate InGaAs/InP single-photon avalanche diodes (SPADs) in a free-running equivalent mode at high count rate. The photodetector is enabled with a 915 MHz sinusoidal gate signal: by keeping the SPAD gate signal unlocked from the synchronization reference of the optical waveform to be reconstructed, a free-running equivalent mode is obtained, that we called gate-free. An extensive experimental characterization has shown how the SPAD performance improves compared with a classical square-wave gating scheme, especially for non-periodic high-throughput applications. The resulting single-photon detector achieves a maximum count rate of 100 Mcount/s, an afterpulsing probability below 0.3 %, a photon detection efficiency of 3 % at 1550 nm, a temporal resolution of 150 ps (Full-Width Half Maximum) and a dark count rate below 2000 count/s (the SPAD is cooled at 220 K).

Paper Details

Date Published: 31 January 2014
PDF: 6 pages
Proc. SPIE 8993, Quantum Sensing and Nanophotonic Devices XI, 89932F (31 January 2014); doi: 10.1117/12.2040189
Show Author Affiliations
Carmelo Scarcella, Politecnico di Milano (Italy)
Gianluca Boso, Politecnico di Milano (Italy)
Fabio Acerbi, Politecnico di Milano (Italy)
Alessandro Ruggeri, Politecnico di Milano (Italy)
Adriano Della Frera, Politecnico di Milano (Italy)
Alberto Tosi, Politecnico di Milano (Italy)

Published in SPIE Proceedings Vol. 8993:
Quantum Sensing and Nanophotonic Devices XI
Manijeh Razeghi; Eric Tournié; Gail J. Brown, Editor(s)

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