Instrumentation, Techniques, and Measurement

Digital holography and quantitative phase contrast imaging using computational shear interferometry

[+] Author Affiliations
Claas Falldorf

BIAS-Bremer Institut Für Angewandte Strahltechnik, Department of Optical Metrology and Opto-Electronic Sensors, Klagenfurter Strasse 2, Bremen 28359, Germany

Mostafa Agour

Aswan University, Faculty of Science, Department of Physics, Aswan 81528, Egypt

Ralf B. Bergmann

BIAS-Bremer Institut Für Angewandte Strahltechnik, Department of Optical Metrology and Opto-Electronic Sensors, Klagenfurter Strasse 2, Bremen 28359, Germany

University of Bremen, Faculty of Physics and Electrical Engineering, Applied Optics, Otto Hahn Allee 1, Bremen 28359, Germany

Opt. Eng. 54(2), 024110 (Feb 25, 2015). doi:10.1117/1.OE.54.2.024110
History: Received November 28, 2014; Accepted February 4, 2015
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Abstract.  In this publication, we give a brief introduction into the field of computational shear interferometry, which allows for determining arbitrary wave fields from a set of shear interferograms. We discuss limitations of the method with respect to the coherence of the underlying wave field and present various numerical methods to recover it from its sheared representations. Finally, we show experimental results on digital holography of objects with rough surfaces using a fiber coupled light-emitting diode and quantitative phase contrast imaging as well as numerical refocusing in differential interference contrast microscopy.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Claas Falldorf ; Mostafa Agour and Ralf B. Bergmann
"Digital holography and quantitative phase contrast imaging using computational shear interferometry", Opt. Eng. 54(2), 024110 (Feb 25, 2015). ; http://dx.doi.org/10.1117/1.OE.54.2.024110


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