We describe a numerical space-shifting reconstruction approach in digital holography. This method is able to remove the dc term in the reconstruction very effectively by utilizing the periodicity and the space-shifting property of inverse discrete Fourier transform. Since the entire process does not need any additional holograms and specific requirements to recording optics, this approach can be a really convenient, practical, and widely effective way to remove the dc term from in-line or off-axis digital holography.
© 2010 Optical Society of America
Original Manuscript: January 21, 2010
Revised Manuscript: March 5, 2010
Manuscript Accepted: March 12, 2010
Published: April 15, 2010
Yanchao Dong and Jian Wu, "Space-shifting digital holography with dc term removal," Opt. Lett. 35, 1287-1289 (2010)