Readout on the resonant-cavity-enhanced InGaAs/GaAs quantum-dot photodetector

  • Fang Min Guo*
  • , Yong Pan Wang
  • , Feng Mao
  • , Zheng Qi Zheng
  • , Jun Hao Chu
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Focused on high sensitivity property of the resonant-cavity-enhanced InGaAs/GaAs quantum dots photodetector, the wide dynamic range readout was demanded and designed. The Capacitive Trans-Impedance Amplifier (CTIA) readout structure having bias stability and good linearity compared the characteristic of the Self-Integrated (SI) readout structures is more suitable for the quantum dots photodetector. However, the CTIA structure needs to expand readout dynamic range for effective photoelectric conversion signal output of the novel photodetector. Through the different integration capacitor readout experimental comparison and analysis, a readout structure whose low noise amplification gain could be automatically adjusted was designed, the output dynamic range extended to over 90dB, and the signal to noise and sensitivity of the output signal have been significantly improved.

Original languageEnglish
Title of host publicationInternational Symposium on Photoelectronic Detection and Imaging 2011
Subtitle of host publicationAdvances in Imaging Detectors and Applications
DOIs
StatePublished - 2011
EventInternational Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications - Beijing, China
Duration: 24 May 201126 May 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8194
ISSN (Print)0277-786X

Conference

ConferenceInternational Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications
Country/TerritoryChina
CityBeijing
Period24/05/1126/05/11

Keywords

  • Dynamic range
  • Low noise gain-adaptive amplifier readout
  • Quantum dots -in- well photodetector
  • Resonant-cavity-enhanced
  • SNR

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