Transfer function analysis in epi-illumination Fourier ptychography

Shaun Pacheco, Basel Salahieh, Tom Milster, Jeffrey J. Rodriguez, Rongguang Liang

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


This Letter explores Fourier ptychography (FP) using epiillumination. The approach effectively modifies the FP transfer function to be coherent-like out to the incoherent limit of twice the numerical aperture over the wavelength 2NA/λ. Images reconstructed using this approach are shown to have higher contrast at finer details compared with images using incoherent illumination, indicating that the FP transfer function is superior in high spatial frequency regions.

Original languageEnglish (US)
Pages (from-to)5343-5346
Number of pages4
JournalOptics letters
Issue number22
StatePublished - Nov 15 2015

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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