A method for recording and evaluating digital image-plane holograms is presented. Hundreds of holograms of an object that has been subjected to dynamic deformation (e.g., vibrations) are recorded. The phase of the wave front is calculated from the recorded holograms by use of a two-dimensional digital Fourier-transform method. By temporal phase unwrapping it is possible to determine the absolute deformation (included the direction of motion) of the object. Experimental results are presented, and the advantages of temporal phase unwrapping compared with spatial phase unwrapping are discussed.
© 2003 Optical Society of America
Original Manuscript: April 18, 2003
Revised Manuscript: July 28, 2003
Published: October 10, 2003
Giancarlo Pedrini, Igor Alexeenko, Wolfgang Osten, and Hans J. Tiziani, "Temporal phase unwrapping of digital hologram sequences," Appl. Opt. 42, 5846-5854 (2003)