Noise and aliases in off-axis and phase-shifting holography

Michel Gross (1) , Michael Atlan (1) , Emilie Absil (2)

1 LKB (Lhomond) - Laboratoire Kastler Brossel
2 Laboratoire Photons Et Matière

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.

Domaines: Optique [physics.optics]

Michel Gross, Michael Atlan, Emilie Absil. Noise and aliases in off-axis and phase-shifting holography. 2008. ⟨hal-00264044v1⟩