Noise and aliases in off-axis and phase-shifting holography
arXiv:0804.2133 · doi:10.1364/AO.47.001757
Abstract
We have compared the respective efficiencies of off-axis and phase-shifting holography in terms of noise and aliases removal. The comparison is made by analyzing holograms of an USAF target backlit with laser illumination, recorded with a charge-coupled device camera. We show that it is essential to remove the LO beam noise, especially at low illumination levels.