Bleached holographic material and process for the fabrication th

Details Bleached holographic material and process for the fabrication th Bleached holographic material and process for the fabrication th

1975-09-02

1976-07-06

Kimlin, Edward C.

Gas separation: apparatus

Electric field separation apparatus

With means to add charged solid or liquid particles to...

96 60R, 350 35, G03C 504, G03C 532

Patent

active

039679632

ABSTRACT:
Silver halide holographic materials have been fabricated by a bleach process which yields substantially improved printout stability while retaining high diffraction efficiencies. Halogen vapors, liquids and nonaqueous solutions are employed to transform amplitude holograms into thick phase holograms in processes that are relatively inexpensive and simple to complete. Recorded patterns produced by these processes may be used for diffraction gratings, Fresnel zone plates, optical elements and the production of special waveforms.

REFERENCES:
patent: 3642472 (1972-02-01), Mayo
patent: 3775111 (1973-11-01), Norman
patent: 3925077 (1975-12-01), Lewis et al.
H. Thiry, "New Technique of Bleaching Photographic Emulsions and its Application to Holography," Applied Optics, VII, No. 7, 1652 (July 1972).

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