Suppression of the zero-order in off-axis digital holography through nonlinear filtering
We present experimental validation of a new reconstruction method for off-axis digital holographic microscopy (DHM). This method effectively suppresses the object auto-correlation — namely the zero-order term — from holographic data, thereby improving the reconstruction bandwidth of complex wavefronts. The algorithm is based on nonlinear filtering; it 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.
Keywords: [MVD] ; Image processing : Digital image processing ; Image processing : Image reconstruction techniques ; Instrumentation, measurement, and metrology : Phase measurement ; Holography : Digital holography ; Image processing : Interferometric imaging
Record created on 2009-10-30, modified on 2016-08-08