Accession Number:

AD0751789

Title:

Holographic Noise Levels in Two Silver Halide Recording Media,

Descriptive Note:

Corporate Author:

COMMUNICATIONS RESEARCH CENTRE OTTAWA (ONTARIO)

Personal Author(s):

Report Date:

1971-06-24

Pagination or Media Count:

14.0

Abstract:

The paper discusses the origin, distribution and magnitude of photographic recording noise in thin amplitude holograms. Three types of noise are distinguished. The first is intermodulation noise which arises due to the non-linearity of the amplitude transmittance-exposure characteristics of the photographic emulsion. Its magnitude can be predicted using a recently reported theory, applicable to diffusely illuminated objects. The second type of noise is surface-relief noise which arises from the distortions of the emulsion surface as a consequence of chemical processing. The final type of noise is film-grain noise which arises from the granular nature of the photosensitive material. Calculations show that for the small object used in these studies, the noise introduced by the film grains is less than that due to intermodulation noise. Author

Subject Categories:

  • Holography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE