Abstract
We have made a Phase Shift Mode Interferometric Optical Microscope (PSM-IOM) operating in liquid and in real time (video rate). We thus implemented for IOM two of the widely accepted basic advantages of Digital Holography Microscopy. Using a modified Tolansky objective to compensate the phase shift from the liquid cell window, we can measure without immersing any part of the microscope objective. The fringe visibility was reduced by 14% in water compared to air. In order to follow surface nano-topography at video rate, we have implemented a Fourier Transform based algorithm which computes the phase map from a single interferogram. A comparison to the Hariharan algorithm is given. As a proof of concept, the nano-evolution of a surface profile of Cu in sulphuric acid is shown.
© 2010 Optical Society of America
PDF ArticleMore Like This
Henry Fenichel, Hans Frankena, Fokke Groen, and Bert Smilde
FA7 Information Processing in Astronomy and Optics (IPAO) 1983
M. Fatih Toy, Jonas Kühn, Jérôme Parent, Christophe Pache, Marcel Egli, and Christian Depeursinge
DTuA5 Digital Holography and Three-Dimensional Imaging (DH) 2010
Liang Gao, Amicia D. Elliott, Robert T. Kester, Noah Bedard, Nathan Hagen, David W. Piston, and Tomasz S. Tkaczyk
FML2 Frontiers in Optics (FiO) 2010