Digital holography for quantitative phase-contrast imaging
- 1 March 1999
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 24 (5), 291-293
- https://doi.org/10.1364/ol.24.000291
Abstract
We present a new application of digital holography for phase-contrast imaging and optical metrology. This holographic imaging technique uses a CCD camera for recording of a digital Fresnel off-axis hologram and a numerical method for hologram reconstruction. The method simultaneously provides an amplitude-contrast image and a quantitative phase-contrast image. An application to surface profilometry is presented and shows excellent agreement with contact-stylus probe measurements.Keywords
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