When shot-noise-limited photodetectors disobey Poisson statistics

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, DOI https://doi.org/10.1364/OL.389908.

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Official URL: https://doi.org/10.1364/OL.389908


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

Item Type: Article
Funders: Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF ECCS-1542205), Materials Research Science and Engineering Center (NSF DMR-1720139), State of Illinois, Northwestern University
Uncontrolled Keywords: Complementary metal oxide semiconductors; Dynamic range; Filtering effects; Imaging applications; Noise statistics; Poisson statistic; Readout chips; Readout Electronics
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 17 Aug 2020 01:37
Last Modified: 17 Aug 2020 01:37
URI: http://eprints.um.edu.my/id/eprint/25371

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