FREQUENCY HETERODYNING IN PHOTOMULTIPLIER TUBES

Abstract

Photomultiplier tubes with a suitable electrode structure were investigated for use in a superheterodyne-type signal receiver for the Doppler shift laser velocimeter (LV). An oscillator signal impressed upon specially constructed electrodes within the photomultiplier tube produced a signal at a frequency which was the difference between the oscillator and the LV signal frequencies. The high gain of the photomultiplier tube then amplified the difference frequency signal to a usable level. Two different tubes were investigated and found to be useful as heterodyne photomultiplier tube amplifiers. The circuit design, experimental results, and applications are discussed.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1970
Accession Number
AD0706383

Entities

People

  • F. L. Crosswy
  • H. T. Kalb

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Amplifiers
  • Difference Frequency
  • Doppler Effect
  • Electric Fields
  • Electrodes
  • Frequency
  • Heterodyning
  • High Gain
  • Instrumentation
  • Laser Velocimeters
  • Lasers
  • Light Sources
  • Modulation
  • Photomultiplier Tubes
  • Spectrum Analyzers
  • Velocimeters

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy