title: Elimination of zero-order diffraction in digital holography
abstract: A simple method to suppress the zero-order diffraction in the reconstructed image of digital holography is presented. In this method, the Laplacian of a detected hologram is used instead of the hologram itself for numerical reconstruction by computing the discrete Fresnel integral. This method can significantly improve the image quality and give better resolution and higher accuracy of the reconstructed image. The main advantages of this method are its simplicity in experimental requirements and convenience in data processing
keyphrases: digital holography reconstructed image Laplacian detected hologram discrete Fresnel integral image quality accuracy data processing zero-order diffraction suppression numerical image reconstruction image resolution image. processing