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Related Experiment Videos

Multiple reflections in a wide-angle Michelson interferometer.

W E Ward1, Z Pasturczyk, W A Gault

  • 1York University, Centre for Research in Experimental Space Science, Toronto, M3J 1P3.

Applied Optics
|June 1, 1985
PubMed
Summary
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Multiple reflections in wide-angle Michelson interferometers (WAMI) alter fringe patterns and measurements. Careful design is needed to avoid these reflections for accurate optical phase and visibility data.

Area of Science:

  • Optics
  • Interferometry
  • Physical Optics

Background:

  • Wide-angle Michelson interferometers (WAMI) are sensitive optical instruments.
  • Semireflecting surfaces, like interference filters, can introduce unwanted multiple reflections.
  • These reflections can impact the performance and accuracy of interferometric measurements.

Purpose of the Study:

  • To investigate the effects of multiple reflections from semireflecting surfaces on WAMI performance.
  • To theoretically model and experimentally verify the influence of these reflections on fringe patterns.
  • To provide guidelines for designing WAMIs that minimize detrimental reflective effects.

Main Methods:

  • Theoretical analysis treating the interferometer as a complex operator on the incident electric field.

Related Experiment Videos

  • Development of models to describe various configurations of semireflecting surfaces within or near the WAMI.
  • Experimental validation of theoretical predictions using a WAMI setup.

    • Main Results:

    • Multiple reflections significantly alter the form of observed interference fringes.
    • The phase and visibility of fringes are demonstrably affected by these reflections.
    • Theoretical predictions were found to be in strong agreement with experimental observations.

    Conclusions:

    • Uncontrolled multiple reflections in WAMIs can lead to significant measurement errors.
    • Careful optical design is crucial to mitigate the impact of reflections on fringe characteristics.
    • Avoiding reflections is essential for accurate phase and visibility measurements in WAMI applications.