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Proceedings Paper

Phase-shifting digital holography and applications
Author(s): Ichirou Yamaguchi
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Paper Abstract

In digital holography holograms are recorded by a CCD camera and image reconstruction is performed by a computer that calculates the diffraction from the hologram. In phase-shifting digital holography an in-line setup is employed in the recording to reduce the spatial frequency spectrum of the hologram, and the distribution of complex amplitude on the CCD is directly derived by means of phase-shifting of the reference beam and subsequent analysis of hologram patterns to suppress the conjugate image. It uses a simple optical setup and delivers distributions of complex amplitude including both amplitude and phase in three-dimensional space without mechanical focusing. We apply this method to microscopy and to surface contouring in which phase distributions resulting from two different angles of incidence at a diffuse object are compared to deliver surface height.

Paper Details

Date Published: 15 December 2000
PDF: 11 pages
Proc. SPIE 4087, Applications of Photonic Technology 4, (15 December 2000); doi: 10.1117/12.406353
Show Author Affiliations
Ichirou Yamaguchi, RIKEN-The Institute of Physical and Chemical Research (Japan)

Published in SPIE Proceedings Vol. 4087:
Applications of Photonic Technology 4
Roger A. Lessard; George A. Lampropoulos, Editor(s)

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