Method of tuning a volume phase recording
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United States of America Patent
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-
Apr 3, 1990
Grant Date -
N/A
app pub date -
Oct 20, 1987
filing date -
Oct 20, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention tunes and stabilizes a volume hologram by migrating an ultraviolet sensitive epoxy resin into the hologram with a solvent, causing the volume hologram to swell and shift its center frequency. When a sufficient shift has occurred, the epoxy resin is exposed to ultraviolet light, setting the resin and preventing further change. An appropriate resin-solvent solution can be arrived at for different media by slowly changing the ratio of solvent to resin and observing the end product until the desired frequency shift and broadbanding is observed with visually or with a spectrometer.
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Cited Art Landscape
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