Off-axis digital holography (Tutorial)

Introduction to off-axis digital holography. A technique for reconstructing the spatial amplitude and phase of an optical field, by measuring the resulting intensity of the interference between the field and a tilted plane-wave (which serves as the phase reference).

0:00 Introduction
5:08 Comparison to traditional analog holography
6:20 Implementation details
6:57 Coherence requirements
10:56 Lossy vs. lossless implementation
13:42 Step-by-step. Fourier processing the interferogram (digital hologram)
19:15 Removing the Reference wave from the final reconstructed field.
21:55 Spatial/angular resolution requirements and limitations.

Bonus animation of the effect of the finite detector area of the camera pixels and using Reference wave aliasing whereby the Reference wave is at a steeper angle than the camera pixels can resolve.
   • Off-axis digital holography (Referenc...