Terahertz Absorption between Split Subbands in Coupled Quantum Wells,

Abstract

The transition between split subbands (design splitting: 5 meV) in n-doped coupled quantum wells is investigated by time-domain spectroscopy with ultrafast pulses of far-infrared radiation. This very strong transition has a linewidth of 2.5 meV. The maximum absorption is observed at 4.2 meV photon energy, lower than the design splitting. We attribute this down-shift of the peak absorption tentatively to the influence of many-body interactions which lead to correction terms for the calculated transition energy in the same order of magnitude as the transition energy itself.

Document Details

Document Type
Technical Report
Publication Date
May 22, 1992
Accession Number
ADP007634

Entities

People

  • Ben Tell
  • Hartmut Roskos
  • Jack Cunningham
  • Jagdeep Shan
  • Martin C. Nuss

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Electromagnetic Radiation
  • Electronics
  • Far Infrared Radiation
  • Infrared Radiation
  • Ionizing Radiation
  • Optical Phenomena
  • Quantum Wells
  • Radiation
  • Solid State Electronics
  • Splitting
  • Time Domain
  • Transitions

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

Technology Areas

  • Quantum Computing
  • Quantum Science - Quantum Dots