Answers are grounded in this paper and cite their sources.
This Letter presents a simple radial shearing interferometery with circular gratings to measure the radial first-order derivative of arbitrary wavefront phase. Two spatial phase-shifted radial shearing interferograms can be simultaneously obtained by the system, and a two-step phase-shifting algorithm with arbitrary phase-shift value is proposed for phase retrieval. The measurement for spherical wave has shown the feasibility and validity, and the optical system is used to measure the radial first-order derivative of projection wavefront phase of a propane flame with plane incident wave.
No takes yet. Share an insight, caveat, or question.
Wang et al. (2013) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: