Holographic recording medium with control of photopolymerization and dark reactions
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United States of America Patent
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Apr 27, 2010
Grant Date -
Aug 31, 2006
app pub date -
Feb 28, 2005
filing date -
Feb 28, 2005
priority date (Note) -
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Abstract
The present invention relates to a system, as well as articles and holographic recording medium comprising the system, where the system comprises: a polymerizable component comprising at least one photoactive polymerizable material; and a photoinitiator component comprising at least one photoinitiator for causing the polymerizable component to polymerize to thereby form a plurality of holographic gratings when activated by exposure to a photoinitiating light source; wherein when a portion of the polymerizable component has been polymerized to form at least one holographic grating, the unpolymerized portion of the polymerizable component is resistant to further polymerization when not exposed to the photoinitiating light source. The present invention also provides methods for forming at least one holographic grating in a holographic recording medium having such a photopolymerizable system.
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