Spatial coherence in 2D holography

Aaron V. Diebold, John B. Pendry, Alberto Favaro, Mohammadreza F. Imani, David R. Smith

Research output: Contribution to journalArticlepeer-review

Abstract

Holography is a long-established technique to encode an object's spatial information into a lower-dimensional representation. We investigate the role of the illumination's spatial coherence properties in the success of such an imaging system through point spread function and Fourier domain analysis. Incoherent illumination is shown to result in more robust imaging performance free of diffraction artifacts at the cost of incurring background noise and sacrificing phase retrieval. Numerical studies confirm that this background noise reduces image sensitivity as the image size increases, in agreement with other similar systems. Following this analysis, we demonstrate a 2D holographic imaging system realized with lensless, 1D measurements of microwave fields generated by dynamic metasurface apertures.

Original languageEnglish (US)
Pages (from-to)727-736
Number of pages10
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Volume38
Issue number5
DOIs
StatePublished - May 2021
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Computer Vision and Pattern Recognition

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