title: Suppression of the zero-order term in off-axis digital holography through nonlinear filtering.
abstract: We present experimental validation of a new reconstruction method for off-axis digital holographic microscopy (DHM). This method effectively suppresses the object autocorrelation, namely, the zero-order term, from holographic data, thereby improving the reconstruction bandwidth of complex wavefronts. The algorithm is based on nonlinear filtering and can be applied to standard DHM setups with realistic recording conditions. We study the robustness of the technique under different experimental configurations, and quantitatively demonstrate its enhancement capabilities on phase signals.
authors: Advanced Photonics Laboratory, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland. nicolas.pavillon@a3.epfl.ch
authors: Nicolas
authors: N
authors: Pavillon
authors: Chandra Sekhar
authors: CS
authors: Seelamantula
authors: Jonas
authors: J
authors: Kühn
authors: Michael
authors: M
authors: Unser
authors: Christian
authors: C
authors: Depeursinge
mesh_terms: D000465:Algorithms; D016477:Artifacts; D006696:Holography / Q000379:methods*; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008853:Microscopy / Q000379:methods*; D017711:Nonlinear Dynamics; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted