Efficient Phase Retrieval for OffxB;-Axis Point Spread Functions
Abstract
A novel pairing of phase retrieval tools allows for efficient estimation of pupil phase in optical systems from images of point spread functions (PSFs). The phase retrieval algorithm uses correlation of modeled phase in the focal plane to decouple aberrations that are difficult to identify in complex PSFs. The use of a phase kernel that departs from the Fresnel approximation for off-axis PSFs is a more accurate representation of wavefront phase in finite conjugate imaging. The combination of the approximation and phase correlation algorithm can be more efficient and accurate than generic algorithms.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 14, 2018
- Accession Number
- AD1056651
Entities
People
- Salome E Carrasco
Organizations
- Air Force Institute of Technology