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When shot-noise-limited photodetectors disobey Poisson statistics

Photodetectors with internal gain are of great interest for imaging applications, since internal gain reduces the effective noise of readout electronics. High-gain photodetectors have been demonstrated, but only individually rather than as a full array in a camera. Consequently, there has been littl...

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Main Authors:	Rabinowitz, Jacob, Rezaei, Mohsen, Park, Min-Su, Tan, Chee Leong, Ulmer, Melville, Mohseni, Hooman
Format:	Article
Published:	Optical Society of America 2020
Subjects:	QC Physics TK Electrical engineering. Electronics Nuclear engineering
Online Access:	http://eprints.um.edu.my/25371/ https://doi.org/10.1364/OL.389908
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spelling	my.um.eprints.253712020-08-17T01:37:01Z http://eprints.um.edu.my/25371/ When shot-noise-limited photodetectors disobey Poisson statistics Rabinowitz, Jacob Rezaei, Mohsen Park, Min-Su Tan, Chee Leong Ulmer, Melville Mohseni, Hooman QC Physics TK Electrical engineering. Electronics Nuclear engineering Photodetectors with internal gain are of great interest for imaging applications, since internal gain reduces the effective noise of readout electronics. High-gain photodetectors have been demonstrated, but only individually rather than as a full array in a camera. Consequently, there has been little investigation of the interaction between camera complementary metal oxide semiconductor (CMOS) electronics and the slow response time that high-gain photodetectors often exhibit. Here we show that this interaction filters shot noise and causes noise statistics to differ from the common Poisson distribution. As an example, we investigate a 320 × 256 array of InGaAs/InP high-gain phototransistors bonded to a CMOS readout chip. We demonstrate the filtering effects and discuss their consequences, including new (to the best of our knowledge) methods for extracting gain and increasing dynamic range. © 2020 Optical Society of America Optical Society of America 2020 Article PeerReviewed Rabinowitz, Jacob and Rezaei, Mohsen and Park, Min-Su and Tan, Chee Leong and Ulmer, Melville and Mohseni, Hooman (2020) When shot-noise-limited photodetectors disobey Poisson statistics. Optics Letters, 45 (11). pp. 3009-3012. ISSN 0146-9592 https://doi.org/10.1364/OL.389908 doi:10.1364/OL.389908
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	QC Physics TK Electrical engineering. Electronics Nuclear engineering
spellingShingle	QC Physics TK Electrical engineering. Electronics Nuclear engineering Rabinowitz, Jacob Rezaei, Mohsen Park, Min-Su Tan, Chee Leong Ulmer, Melville Mohseni, Hooman When shot-noise-limited photodetectors disobey Poisson statistics
description	Photodetectors with internal gain are of great interest for imaging applications, since internal gain reduces the effective noise of readout electronics. High-gain photodetectors have been demonstrated, but only individually rather than as a full array in a camera. Consequently, there has been little investigation of the interaction between camera complementary metal oxide semiconductor (CMOS) electronics and the slow response time that high-gain photodetectors often exhibit. Here we show that this interaction filters shot noise and causes noise statistics to differ from the common Poisson distribution. As an example, we investigate a 320 × 256 array of InGaAs/InP high-gain phototransistors bonded to a CMOS readout chip. We demonstrate the filtering effects and discuss their consequences, including new (to the best of our knowledge) methods for extracting gain and increasing dynamic range. © 2020 Optical Society of America
format	Article
author	Rabinowitz, Jacob Rezaei, Mohsen Park, Min-Su Tan, Chee Leong Ulmer, Melville Mohseni, Hooman
author_facet	Rabinowitz, Jacob Rezaei, Mohsen Park, Min-Su Tan, Chee Leong Ulmer, Melville Mohseni, Hooman
author_sort	Rabinowitz, Jacob
title	When shot-noise-limited photodetectors disobey Poisson statistics
title_short	When shot-noise-limited photodetectors disobey Poisson statistics
title_full	When shot-noise-limited photodetectors disobey Poisson statistics
title_fullStr	When shot-noise-limited photodetectors disobey Poisson statistics
title_full_unstemmed	When shot-noise-limited photodetectors disobey Poisson statistics
title_sort	when shot-noise-limited photodetectors disobey poisson statistics
publisher	Optical Society of America
publishDate	2020
url	http://eprints.um.edu.my/25371/ https://doi.org/10.1364/OL.389908
_version_	1680857024439517184
score	13.211869

When shot-noise-limited photodetectors disobey Poisson statistics

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