title: Enhancing spatial resolution in digital holographic microscopy by biprism structured illumination.
abstract: A novel and efficient architecture of a structured-illumination digital holographic microscope (DHM) is presented. As the DHM operates at the diffraction limit, its spatial resolution on label-free imaging of transparent samples is improved by illuminating the sample with a structured illumination produced by a Fresnel's biprism. The theoretical analysis of the method forecasts a twofold improvement of the spatial resolution. The proposed method requires only two images to improve the spatial resolution, which eases the process of unmixing the high-resolution components by means of an unknown phase-shift procedure. Numerical modeling and experimental results validate the theoretical findings.
authors.forename: Emilio
authors.initials: E
authors.lastname: Sánchez-Ortiga
authors.forename: Manuel
authors.initials: M
authors.lastname: Martínez-Corral
authors.forename: Genaro
authors.initials: G
authors.lastname: Saavedra
authors.forename: Jorge
authors.initials: J
authors.lastname: Garcia-Sucerquia