Full field-of-view digital lens-free holography for weak-scattering objects based on grating modulation

Wenhui Zhang, Liangcai Cao, Guofan Jin, David Brady

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Grating-based single-shot digital lens-free holography with spatial spectral multiplexing is proposed to realize full field-of-view (FOV) imaging for weak-scattering objects. Multiple object waves are generated by a one-dimensional grating that is placed in near contact with the object to avoid the cross talk among different diffraction orders during reconstruction. A multiplexed off-axis hologram is created by interference between the object waves and reference wave and captured by an image sensor in one shot. Multiple imaging areas corresponding to the captured object waves can be simultaneously retrieved during reconstruction. A formula which guarantees full FOV imaging without cross talk or information loss is presented. The imaging experiments of a USAF resolution target are presented to demonstrate the feasibility of this method.

Original languageEnglish (US)
Pages (from-to)A164-A171
JournalApplied optics
Volume57
Issue number1
DOIs
StatePublished - Jan 1 2018
Externally publishedYes

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'Full field-of-view digital lens-free holography for weak-scattering objects based on grating modulation'. Together they form a unique fingerprint.

Cite this