TY - JOUR AU - Picazo-Bueno, José Ángel AU - García, Javier AU - Micó, Vicente PY - 2021 M3 - Brief Research Report TI - Single-Element Reflective Digital Holographic Microscopy JO - Frontiers in Physics UR - https://www.frontiersin.org/articles/10.3389/fphy.2021.639607 VL - 9 SN - 2296-424X N2 - Digital holographic microscopy (DHM) is a well-known microscopy technique using an interferometric architecture for quantitative phase imaging (QPI) and it has been already implemented utilizing a large number of interferometers. Among them, single-element interferometers are of particular interest due to its simplicity, stability, and low cost. Here, we present an extremely simple common-path interferometric layout based on the use of a single one-dimensional diffraction grating for both illuminating the sample in reflection and generating the digital holograms. The technique, named single-element reflective digital holographic microscopy (SER-DHM), enables QPI and topography analysis of reflective/opaque objects using a single-shot operation principle. SER-DHM is experimentally validated involving different reflective samples. ER -