Iterative Phase Estimation Algorithms in Interferometric Systems (Preprint)
Abstract
Coherent optical interferometry has a long history of enabling extremely precise measurements at length scales of less than the wavelength of light used in the interferometer. It is the ability of these systems to measure both the relative phase and amplitude information of the optical field by interfering two beams of light which makes them so useful. Interferometric techniques have also been adopted for use in both imaging/ sensing technologies. For imaging systems in ideal conditions, the ability to measure both phase and amplitude information in one transverse plane allows for the calculation of that fields phase and amplitude distribution in any other transverse plane. However, the presence of atmospheric turbulence unpredictably alters the index of refraction in the propagation medium thereby adversely affecting the fidelity with which the phase and amplitude in a transverse plane can be calculated.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 26, 2021
- Accession Number
- AD1134269
Entities
People
- Wesley E. Farriss