Performance of the Phonon-Cooled Hot-Electron Bolometric Mixer Between 0.7 THz and 5.2 THz

Abstract

We report on the phonon cooled NbN hot electron bolometer as mixer in the terahertz frequency range. Its hybrid antenna consists of a hyperhemispheric silicon lens and a logarithmic-spiral feed antenna. Noise temperatures have been measured between 0.7 THz and 5.2 THz. A quarter wavelength layer of Parylene works as antireflection coating for the silicon lens and reduces the noise temperature by about 30%. It was found that the antenna pattern at 2.5 THz is determined by the feed antenna and not by the diameter of the lens.

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Document Details

Document Type
Technical Report
Publication Date
Sep 29, 2000
Accession Number
ADP011753

Entities

People

  • Alexei Semenov
  • Boris Voronov
  • Greogry Gol'tsman
  • Heinz Huebers
  • Josef Schubert

Organizations

  • German Aerospace Center

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Sensors

DTIC Thesaurus Topics

  • Antennas
  • Antireflection Coatings
  • Coatings
  • Diameters
  • Electron Beam Lithography
  • Electron Beams
  • Electrons
  • Far Infrared Lasers
  • Frequency
  • Intermediate Frequencies
  • Local Oscillators
  • Measurement
  • Radiation
  • Refractive Index
  • Spiral Antennas
  • Substrates
  • Terahertz Radiation

Fields of Study

  • Physics

Readers

  • Phased Array Antenna Design.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Semiconductor Device Technology

Technology Areas

  • Microelectronics