Ge-on-Si avalanche photodiodes and single-photon avalanche diode detectors for low-level light detection in the short-wave infrared wavelength region
Detection in the short-wave infrared (SWIR) offers advantages like reduced solar noise and improved atmospheric transmission. Avalanche photodiodes (APDs) are ideal for low-light detection due to internal gain. While silicon (Si) APDs have low noise, they can't effectively detect SWIR light. Germanium (Ge) is good for SWIR detection but suffers from high noise. Ge-on-Si structure offers benefits like SWIR operation and efficient multiplication. This study showcases room temperature operation of a linear-mode pseudo-planar Ge-on-Si APD with high responsivity, gain, and low noise at 1550 nm. Moreover, a 10-pixel linear array exhibits uniform performance, promising for SWIR detection for potential LIDAR application.
Authors
- Derek C. S. Dumas
- Ross Millar (ORCID: https://orcid.org/0000-0001-5790-7947)
- Jarosław Kirdoda (ORCID: https://orcid.org/0000-0001-5316-4496)
- Xin Yi (ORCID: https://orcid.org/0000-0003-0177-2398)
- Hannah Mowbray
- Fiona Fleming (ORCID: https://orcid.org/0000-0001-9342-6446)
- Lisa Saalbach (ORCID: https://orcid.org/0000-0002-3216-2026)
- Xiao Jin (ORCID: https://orcid.org/0000-0002-7205-3318)
- Charlie McCarthy (ORCID: https://orcid.org/0009-0007-8386-5526)
- Douglas J. Paul (ORCID: https://orcid.org/0000-0001-7402-8530)
- Gerald S. Buller (ORCID: https://orcid.org/0000-0003-0441-2830)
- Charlie Smith (ORCID: https://orcid.org/0009-0000-0082-0840)
- Muhammad Mirza (ORCID: https://orcid.org/0000-0002-1789-224X)
- Mrudul Modak
- David Muir
- J.P.R. David
Institutions
- University of Glasgow (GB)
- University of Sheffield (GB)
Publication Details
- Published
- 2024-11-15
- DOI
- https://doi.org/10.1117/12.3033690
- Primary Topic
- Advanced Optical Sensing Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Engineering and Physical Sciences Research Council