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  • Chinese Optics Letters
  • Vol. 19,
  • Issue 5,
  • pp. 052601-
  • (2021)

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, and Yangjian Cai

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Abstract

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.

© 2021 Chinese Laser Press

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