Study of Carrier Dynamics in Self-Assembled InAs QDs and InAs/InGaSb Superlattices Using Pump Probe Spectroscopy

Abstract

The proposed project aims to investigate the carrier dynamics in two systems that are emerging as a promising candidates for mid-wave infrared (MWIR) and long-wave infrared (LWIR) detectors, namely, self assembled InAs/InGaAs quantum dots and InAs/InGaSb strain layer superlattice. In addition to this, a third material system, metamorphically grown "Arsenic Free" (In,Al,Ga)Sb/GaSb materials will also be investigated. The proposed duration of the project is three years. In this period (1 Jan 2003-31 Dec 2003), metamorphic InGaSb structures were grown and their optical and structural properties were characterized. A femtosecond spectroscopy system was set up to accurately determine the carrier lifetime in all these materials was funded. Results from this grant were published in peer reviewed journals and presented at international conferences.

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Document Details

Document Type
Technical Report
Publication Date
Apr 26, 2006
Accession Number
ADA447254

Entities

People

  • Sanjay Krishna

Organizations

  • University of New Mexico

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Bessel Functions
  • Detectors
  • Electric Fields
  • Electron Microscopy
  • Electrons
  • Energy Bands
  • Energy Levels
  • Ground State
  • Lasers
  • Long-Wavelength Infrared Radiation
  • Materials
  • Quantum Dots
  • Quantum Wells
  • Relaxation Time
  • Scattering
  • Semiconductors
  • Spectroscopy

Fields of Study

  • Materials science

Readers

  • Clinical Trial Research.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Semiconductor Device Technology

Technology Areas

  • Quantum Computing