Feature
Noise Gratings Recorded in Silver Halide Volume Holograms
With recent advances in holographic technology, many types of holographic optical elements (HOEs) are being used in different optical systems. Typically these HOEs are recorded as volume phase holograms. Bleached photographic emulsions are an important medium for making volume phase HOEs because of the relatively high sensitivity and ease of processing of the material, improved processing chemistries, and the repeatability of results. However, photographic emulsions consist of fine-grained silver halide crystals suspended in a gelatin base, so the effect of noise gratings on holograms recorded in this material is significant.
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