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Interferogram analysis using Fourier transform techniques
Applied Optics
|May 11, 2010
Summary
Fourier transform techniques map complex fringe visibility in interferograms. An iterative method removes edge effects for improved seeing measurements and interferometric tests.
Area of Science:
- Optical physics
- Image processing
Background:
- Interferograms contain complex fringe visibility data.
- Edge effects can obscure important information in interferograms.
Purpose of the Study:
- To apply Fourier transform techniques for mapping complex fringe visibility.
- To utilize an iterative method for edge effect removal in interferograms.
Main Methods:
- Fourier transform techniques were employed.
- A Gerchberg-type iterative algorithm was used to eliminate edge effects.
Main Results:
- Complex fringe visibility was successfully mapped.
- The iterative technique effectively removed edge effects.
- Results were demonstrated for seeing measurements and interferometric tests.
Conclusions:
- Fourier transform methods combined with iterative edge effect removal provide accurate fringe visibility mapping.
- This approach enhances the analysis of interferometric data for applications like astronomical seeing and optical testing.
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