Ge-on-Si Single-Photon Avalanche Diode Detectors with Low Noise Equivalent Power in the Short-Wave Infrared

Ross W. Millar, Jarosław Kirdoda, Fiona Thorburn, Laura L. Huddleston, Derek C. S. Dumas, Zoe M. Greener, Kateryna Kuzmenko, Peter Vines, Lourdes Ferre-Llin, Xin Yi, Scott Watson, Bhavana Benakaprasad, Angus Bruce, Gerald S. Buller, Douglas J. Paul

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Single-Photon Avalanche Diode (SPAD) detectors are of significant interest for a range of applications [1] , in particular for quantum technologies (e.g. quantum-key distribution, quantum information processing), and light detection and ranging (LIDAR) for defence, terrain mapping, and autonomous vehicles. These applications either require, or benefit from, operation at wavelengths in the short-wave infrared (SWIR). Previous SWIR single-photon LIDAR has typically used InGaAs/InP SPAD detector technology, which has relatively low efficiency and suffers from afterpulsing. Previously, a pseudo-planar design for a Ge-on-Si SPAD was demonstrated [2] , yielding a huge improvement in performance for Ge-on-Si SPADs at 1310 nm and demonstrating the potential for Si foundry compatible SWIR SPADs. Furthermore, reduced afterpulsing was demonstrated compared to a commercial InGaAs/InP device when measured in nominally identical conditions. Here we present a further step change in performance, with reduced dark count rate (DCR), record low noise-equivalent-power (NEP) and low jitter by scaling the technology and developing 26m diameter pixels [3].

Original languageEnglish
Title of host publication2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
PublisherIEEE
ISBN (Electronic)9781665418768
DOIs
Publication statusPublished - 30 Sep 2021
Event2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference - Munich, Germany
Duration: 21 Jun 202125 Jun 2021

Conference

Conference2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference
Abbreviated titleCLEO/Europe-EQEC 2021
Country/TerritoryGermany
CityMunich
Period21/06/2125/06/21

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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