Model for Ultrafast Extrinsic Photoconductivity in Er-Doped GaAs

E. R. Brown, W. D. Zhang, A. Feldman, T. Harvey, R. P. Mirin

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

Abstract

A model is constructed for extrinsic photoconductivity in GaAs heavily doped with Er and driven around 1550 nm. The model is based on internal photoionization of ErAs nanoparticles in the diameter range 2.0 to 2.5 nm, which occurs via a resonant, bound-to-continuum electron transition between the Γ-point in the atomic-like ErAs and the Γ-valley in the GaAs. The model is consistent with all experimental evidence to date, including sub-band absorption, photo-Hall measurements, 1550-nm pump-probe photocarrier lifetime, and THz power generation.
Original languageEnglish
Title of host publication41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
PublisherIEEE Computer Society
ISBN (Electronic)9781467384858
DOIs
StatePublished - Nov 28 2016
Event41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016 - Copenhagen, Denmark
Duration: Sep 25 2016Sep 30 2016

Publication series

NameInternational Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
Volume2016-November
ISSN (Print)2162-2027
ISSN (Electronic)2162-2035

Conference

Conference41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
Country/TerritoryDenmark
CityCopenhagen
Period9/25/169/30/16

ASJC Scopus Subject Areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Keywords

  • Gallim arsenide
  • Nanoparticles
  • Photoconductivity
  • Absorption
  • Antenna measurements
  • Detectors
  • Power measurement
  • Electronic Transitions
  • GaAs Substrate

Disciplines

  • Optics

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