Abstract
We describe a quantitative phase-imaging interferometer in which phase shifting and noise cancellation are performed by an active feedback loop using a reference laser. Depth gating via low-coherence light allows phase measurement from weakly reflecting biological samples. We demonstrate phase images from a test structure and living cells.
Publication types
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Evaluation Study
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Equipment Design
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Equipment Failure Analysis
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HeLa Cells / pathology*
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Humans
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Image Enhancement / instrumentation*
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Image Enhancement / methods
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Interferometry / instrumentation*
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Interferometry / methods
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Phantoms, Imaging
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Tomography, Optical Coherence / instrumentation*
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Tomography, Optical Coherence / methods