Development of III-V Terahertz Quantum Cascade Lasers

Abstract

A very successful Phase I project on semiconductor THz laser has been carried out. Several innovative techniques have been demonstrated during the performance of this work. The most significant concept being a different approach to how the laser should be pumped, resulting in more efficient THz output generation. We called this concept Separate Electrical and Waveguide (SEW) structure that circumvents the radiation absorption in the doped waveguide region in a conventional THz device, leading to lower threshold and higher temperature operation. In addition, we have developed an electrical measurement to detect lasing threshold, and a packaging technique for solid, effective thermal contact during movement.

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Document Details

Document Type
Technical Report
Publication Date
Feb 14, 2005
Accession Number
ADA434866

Entities

People

  • Dabiran
  • Sergey Zaytsev

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Absorption
  • Band Structures
  • Fermi Levels
  • Geometry
  • Infrared Lasers
  • Lasers
  • Losses
  • Low Temperature
  • Measurement
  • Quantum Cascade Lasers
  • Quantum Wells
  • Radiation
  • Radiation Absorption
  • Semiconductor Lasers
  • Semiconductors
  • Temperature Control
  • Terahertz Radiation

Fields of Study

  • Materials science
  • Physics

Readers

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

Technology Areas

  • Directed Energy
  • Microelectronics
  • Quantum Computing