We present an original heterodyne holography method for digital holography that relies on two-dimensional heterodyne detection to record the phase and the amplitude of a field. The technique has been tested on objects as much as 13 mm in size. Consistency checks were performed, and high-resolution images were computed. We show the requirement for a spatial filter to select properly sampled near-axis photons. Heterodyne holography is superior to off-axis digital holography for both field of view and resolution.
© 2000 Optical Society of America
(090.0090) Holography : Holography
(100.2000) Image processing : Digital image processing
(110.1650) Imaging systems : Coherence imaging
(170.1650) Medical optics and biotechnology : Coherence imaging
(170.7050) Medical optics and biotechnology : Turbid media
F. Le Clerc, L. Collot, and M. Gross, "Numerical heterodyne holography with two-dimensional photodetector arrays," Opt. Lett. 25, 716-718 (2000)