Precise Interferometric Phase Determination
Abstract
A precise determination of phase shifts from interferometric fringes is necessary to accurately determine density structure. This is accomplished by a careful comparison of the pair of interferograms representing the initial and final phases. A step-by-step procedure is given for determining the interpolated phase shift from fringes crossing a given axial position of a medium with axial symmetry. Non-uniform final fringe spacing is assumed and accounted for in the interpolation. An example is included, as well as a listing of the computer program.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 30, 1988
- Accession Number
- ADA200186
Entities
People
- John A. Stamper
Organizations
- United States Naval Research Laboratory