Optimizing illumination’s complex coherence state for overcoming Rayleigh’s resolution limit

Chunhao Liang, Yashar E. Monfared, Xin Liu, Baoxin Qi, Fei Wang, Olga Korotkova, Yangjian Cai

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


We suggest tailoring of the illumination’s complex degree of coherence for imaging specific two- and three-point objects with resolution far exceeding the Rayleigh limit. We first derive a formula for the image intensity via the pseudo-mode decomposition and the fast Fourier transform valid for any partially coherent illumination (Schell-like, non-uniformly correlated, twisted) and then show how it can be used for numerical image manipulations. Further, for Schell-model sources, we show the improvement of the two- and three-point resolution to 20% and 40% of the classic Rayleigh distance, respectively.

Original languageEnglish (US)
Article number052601
JournalChinese Optics Letters
Issue number5
StatePublished - Apr 10 2021
Externally publishedYes


  • Imaging
  • Light manipulation
  • Optical coherence

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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