Two different types of multiplexing are used to store 90 holograms at the same location in a polyvinyl alcoholacrylamide photopolymer material. In the first, the 90 holograms are stored using only peristrophic multiplexing, whereas in the second a combination of angular and peristrophic multiplexing is used. The results (diffraction efficiency and dynamic range, M#) obtained with these two multiplexing techniques are compared. With the first, the dynamic range was M# = 13 and with the second M# = 8. An exposure schedule method is used to calculate the exposure time necessary to store the holograms with a more uniform, higher diffraction efficiency.
© 2007 Optical Society of America
Original Manuscript: December 21, 2006
Revised Manuscript: May 23, 2007
Manuscript Accepted: May 30, 2007
Published: July 23, 2007
Elena Fernández, Manuel Ortuño, Sergi Gallego, Celia García, Augusto Beléndez, and Immaculada Pascual, "Comparison of peristrophic multiplexing and a combination of angular and peristrophic holographic multiplexing in a thick PVA/acrylamide photopolymer for data storage," Appl. Opt. 46, 5368-5373 (2007)