Open AccessEnhanced sensitivity digital holographic interferometry
Author(s) -
Nazif Demoli,
Marc Torzynski,
Dalibor Vukičević
Publication year - 2007
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.15.010672
Subject(s) - optics , holographic interferometry , interferometry , electronic speckle pattern interferometry , holography , opacity , sensitivity (control systems) , digital holographic microscopy , physics , point (geometry) , digital holography , mathematics , geometry , electronic engineering , engineering
Corona discharges are generally characterized by a low optical density whose detection is often near or under the limits of interferometric techniques. In this paper, we propose a method of digital holographic interferometry that enables detection with enhanced sensitivity. This sensitivity increase is obtained by post-processing the digital holographic recordings with a set of point-wise image operations. The procedure is described mathematically and illustrated experimentally. Examples are given for an opaque object and for DC corona discharges generated in the symmetrical point-plane geometry.