Low-coherence snapshot phase-shifting diffraction phase microscope

Yuanyuan Sun, Yihan Wang, Daodang Wang, Stanley Pau, Rongguang Liang

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

We proposed a Wollaston-prism-based snapshot phase-shifting diffraction phase microscope (WP-SPDPM) for low-coherence snapshot quantitative phase imaging and videography. Wollaston prism separates two orthogonally linearly polarized beams with high degrees of polarization at a sufficiently small separation angle; one of the beams passing through a pinhole serves as the reference beam. Four phase-shifted interferograms are simultaneously acquired with a polarization camera to accurately retrieve a high spatial resolution phase map. The system is nearly common-path in configuration and can achieve a large slope range and high accuracy. In addition to the ability to resist environmental noise, the WP-SPDPM is suitable for phase measurement using low-coherence light. The accuracy and large measurable slope range of the proposed system is validated and compared experimentally with a commercial profilometer. We believe WP-SPDPM is a powerful tool for the accurate and robust quantitative phase measurement and has a significant potential of the real-time phase imaging.

Original languageEnglish (US)
Article number107618
JournalOptics and Lasers in Engineering
Volume167
DOIs
StatePublished - Aug 2023

Keywords

  • Optical metrology
  • Optical testing
  • Quantitative phase imaging
  • Surface measurement

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'Low-coherence snapshot phase-shifting diffraction phase microscope'. Together they form a unique fingerprint.

Cite this