Far-Infrared Spontaneous Intraband Emission from Laser Structures with Quantum Dots and Quantum Wells

Abstract

Spontaneous far-infrared radiation (Lambda = approx. 10 yo 20 micrometers) from laser structures with vertical coupled lnGaAs/AlGaAs quantum dots (QD) connected with intrasubband hole and electron transitions between levels of size quantization in QD as well as with transitions from continuum to QD levels was found. Far-infrared radiation is observed only under simultaneous generation of short wavelength interband radiation (A = about 0.94 micrometers) and has a current threshold just as short wavelength radiation. Spontaneous far-infrared radiation is observed also from laser lnGaAs/GaAs structures with quantum wells (Qw). Intensity of this radiation is about of order less then intensity of radiation from structures with quantum dots and has no current threshold.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1998
Accession Number
ADP012752

Entities

People

  • D. A. Firsov
  • L. E. Vorobjev
  • V. A. Shalygin
  • V. N. Tulupenko
  • Yu M. Shernyakov

Organizations

  • Peter the Great Saint Petersburg State Polytechnical University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Demographic Cohorts
  • Electron Transitions
  • Electrons
  • Emission
  • Far Infrared Lasers
  • Far Infrared Radiation
  • Ground Level
  • Infrared Phenomena
  • Infrared Radiation
  • Intensity
  • Lasers
  • Near Infrared Radiation
  • Quantum Dot Lasers
  • Quantum Dots
  • Quantum Wells
  • Radiation
  • Transitions

Readers

  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Spectroscopy.

Technology Areas

  • Directed Energy
  • Microelectronics
  • Quantum Computing