Hologram formation and diffusion reactions in photopolymer films are examined at different stages of exposure and at different spatial frequencies. Different properties of the grating formation process are evaluated from efficiency data, including the relative rates of diffusion and photoinitiated polymerization, dye absorption, and residual efficiency enhancement after UV curing. It was also found that gratings with larger periods (∼1.4 µm) are susceptible to erasure effects with postexposure laser illumination. In addition, crossed gratings were found to have an extended dynamic range. This effect can have a significant impact on the number of holograms formed with rotational or peristrophic multiplexing.
© 1999 Optical Society of America
Original Manuscript: June 29, 1998
Revised Manuscript: November 19, 1998
Published: March 10, 1999
Raymond K. Kostuk, "Dynamic hologram recording characteristics in DuPont photopolymers," Appl. Opt. 38, 1357-1363 (1999)