Dynamic hologram recording characteristics in DuPont photopolymers
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 p...
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| Published in | Applied optics (2004) Vol. 38; no. 8; p. 1357 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
United States
10.03.1999
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| Online Access | Get more information |
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| Summary: | 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 (approximately 1.4 microm) 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. |
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| ISSN: | 1559-128X |
| DOI: | 10.1364/AO.38.001357 |