Quantitative reflection phase mesoscopy by remote coherence tuning of phase-shift interference patterns

Elad Arbel, Alberto Bilenca

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Conventional low-magnification phase-contrast microscopy is an invaluable, yet a qualitative, imaging tool for the interrogation of transparent objects over a mesoscopic millimeter-scale field-of-view in physical and biological settings. Here, we demonstrate that introducing a compact, unbalanced phase-shifting Michelson interferometer into a standard reflected brightfield microscope equipped with low-power infinity-corrected objectives and white light illumination forms a phase mesoscope that retrieves remotely and quantitatively the reflection phase distribution of thin, transparent, and weakly scattering samples with high temporal (1.38nm) and spatial (0.87nm) axial-displacement sensitivity and micrometer lateral resolution (2.3μm) across a mesoscopic field-of-view (2.25 × 1.19mm 2). Using the system, we evaluate the etch-depth uniformity of a large-area nanometer-thick glass grating and show quantitative mesoscopic maps of the optical thickness of human cancer cells without any area scanning. Furthermore, we provide proof-of-principle of the utility of the system for the quantitative monitoring of fluid dynamics within a wide region.

Original languageEnglish
Article number12560
JournalScientific Reports
StatePublished - 28 Jul 2015

ASJC Scopus subject areas

  • General


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