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Image plane detector for the Dynamics Explorer Fabry-Perot interferometer.

T L Killeen1, B C Kennedy, P B Hays

  • 1University of Michigan, Department of Atmospheric & Oceanic Science, Space Physics Research Laboratory, Ann Arbor, Michigan 48109, USA.

Applied Optics
|November 15, 1983
PubMed
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A new photon-counting detector was developed for the Dynamics Explorer Fabry-Perot interferometer. This device enhances atmospheric emission measurements by utilizing multichannel detection for Doppler shifts and line broadening.

Area of Science:

  • Atmospheric physics and remote sensing
  • Optical instrumentation
  • Spectroscopy

Background:

  • Fabry-Perot interferometers are crucial for high-resolution atmospheric spectroscopy.
  • Existing detectors faced limitations in sensitivity and spectral sampling for low-intensity atmospheric emissions.
  • Generation II imaging technology offers potential for advanced detector development.

Purpose of the Study:

  • To develop a compact, twelve-channel photon-counting detector for the Dynamics Explorer Fabry-Perot interferometer.
  • To leverage multichannel detection for improved measurement of Doppler shifts and line broadening in atmospheric emissions.
  • To enhance the study of low-intensity, naturally occurring atmospheric phenomena.

Main Methods:

  • Development of a photon-counting device using Generation II imaging technology.

Related Experiment Videos

  • Incorporation of an S-20 photocathode and three-microchannel plate electron multiplication stages.
  • Design of an equal-area concentric-ring segmented anode mimicking interference ring patterns.
  • Calibration and testing of the detector system, including flight performance evaluation.

    • Main Results:

    • Successful development and implementation of a compact twelve-channel photon-counting detector.
    • Demonstration of the signal multiplex advantage for low-intensity atmospheric emission analysis.
    • Presentation of high-resolution emission line profiles measured by the satellite instrument.
    • Validation of the detector's performance in measuring Doppler shifts and line broadening.

    Conclusions:

    • The novel multichannel photon-counting detector is effective for high-resolution atmospheric spectroscopy.
    • The device enables precise measurement of Doppler shifts and line broadening in faint atmospheric emissions.
    • This technology advances the capabilities of the Dynamics Explorer Fabry-Perot interferometer for atmospheric research.