Quantum noise in Fresnel zone plate imaging

H. H. Barrett, G. D. DeMeester

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


A Fresnel zone plate, used as a coded aperture, offers a great advantage in geometric collection efficiency over a conventional pinhole or collimator. We present a detailed analysis of the signal-to-noise ratio (SNR) of a quantum-limited zone plate camera. The magnitude and spatial distribution of the noise field and its dependence on the source distribution and the characteristics of the optical processing system are derived. It is shown that the largest SNR advantage occurs for a point source, while for very large, uniform sources there may be a slight net disadvantage to using a zone plate. It is also shown that optical processing does not give the highest possible SNR.

Original languageEnglish (US)
Pages (from-to)1100-1109
Number of pages10
JournalApplied optics
Issue number5
StatePublished - May 1974

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering


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