Open AccessDepth-filtering in common-path digital holographic microscopy
Author(s) -
Markus Finkeldey,
Lena Göring,
Carsten Brenner,
Martin R. Hofmann,
Nils C. Gerhardt
Publication year - 2017
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.019398
Subject(s) - optics , digital holographic microscopy , interference microscopy , holography , digital holography , microscopy , optical path , microscope , interference (communication) , materials science , phase imaging , coherence (philosophical gambling strategy) , phase (matter) , sample (material) , optical coherence tomography , wavefront , overlay , optical microscope , computer science , physics , channel (broadcasting) , telecommunications , scanning electron microscope , quantum mechanics , thermodynamics , programming language
We demonstrate a method to select different layers in a sample using a low coherent gating approach combined with a stable common-path quantitative phase imaging microscopy setup. The depth-filtering technique allows us to suppress the negative effects generated by multiple interference patterns of overlaying optical interfaces in the sample. It maintains the compact and stable common-path setup, while enabling images with a high phase sensitivity and acquisition speed. We use a holographic microscope in reflective geometry with a non-tunable low coherence light source. First results of this technique are shown by imaging the hardware layer of a standard micro-controller through its thinned substrate.