Method of tuning a volume phase recording

Details Method of tuning a volume phase recording Method of tuning a volume phase recording

1987-10-20

1990-04-03

Dees, Jose G.

Radiation imagery chemistry: process, composition, or product th

Including control feature responsive to a test or measurement

430 1, 430 12, 430328, 430325, 350 361, G03C 539

Patent

active

049139908

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.

REFERENCES:
patent: 4509817 (1985-04-01), Ho et al.
patent: 4789211 (1988-12-01), Wreede
patent: 4808500 (1989-02-01), Wreede et al.
"Norland Optical Adhesive 61", Norland Products, Inc., N.J.

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