Carrier dynamics in self-assembled ErAs nanoislands embedded in GaAs measured by optical-pump terahertz-probe spectroscopy

Academic Article

Abstract

  • We use optical-pump terahertz (THz)-probe spectroscopy to study carrier dynamics in self-assembled ErAs nanoislands embedded in GaAs and deposited in a superlattice structure. Measurements are performed at several pump fluences on samples with different superlattice periods, enabling a determination of the time-dependent conductivity. Subpicosecond carrier capture times are obtained, indicating the potential of these devices as time-domain THz detectors with performance comparable to low-temperature grown GaAs and superior control of material parameters. © 2005 American Institute of Physics.
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    Digital Object Identifier (doi)

    Author List

  • Prasankumar RP; Scopatz A; Hilton DJ; Taylor AJ; Averitt RD; Zide JM; Gossard AC
  • Start Page

  • 1
  • End Page

  • 3
  • Volume

  • 86
  • Issue

  • 20