Quantitative phase imaging by three-wavelength digital holography

Christopher J. Mann, Philip R. Bingham, Vincent C. Paquit, Kenneth W. Tobin

Research output: Contribution to journalArticlepeer-review

161 Scopus citations


Three-wavelength digital holography is applied to obtain surface height measurements over several microns of range, while simultaneously maintaining the low noise precision of the single wavelength phase measurement. The precision is preserved by the use of intermediate synthetic wavelength steps generated from the three wavelengths and the use of hierarchical optical phase unwrapping. As the complex wave-front of each wavelength can be captured simultaneously in one digital image, real-time performance is achievable.

Original languageEnglish (US)
Pages (from-to)9753-9764
Number of pages12
JournalOptics Express
Issue number13
StatePublished - Jun 23 2008

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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