Neipp, Cristian, Condeza, Shirley, Campos, Ana María, Pascual, Inmaculada, Beléndez, Augusto
Comparative study of bleaches applied to BB-640 plates
NEIPP LÓPEZ, Cristian, et al. "Comparative study of bleaches applied to BB-640 plates". Journal of Optics A: Pure and Applied Optics. Vol. 6, No. 1 (Jan. 2004). ISSN 1464-4258, pp. 71-76
URI: http://hdl.handle.net/10045/9287
DOI: 10.1088/1464-4258/6/1/013
ISSN: 1464-4258 (Print)
Abstract: 
The use of bleaching techniques is perhaps one of the most popular methods of creating phase holograms from holographic emulsions. In this paper we will study the influence of the different experimental conditions on the refractive index modulation created inside the hologram when bleaching techniques are used. A comparison will be made between three different kinds of bleach: a reversal bleach, a conventional bleach and a fixation-free rehalogenating bleach. It will be demonstrated that the necessary refractive index modulation can be achieved with conventional and fixation-free rehalogenating bleaches. The values of the diffraction efficiency are only limited by the absorption and scattering, which is very high in the case of conventional bleaches. It will also be found that the lowest values of absorption and scattering are obtained when the reversal bleach is used to obtain the volume holograms. In this case, the refractive index modulation stored in the hologram is not high and so the final diffraction efficiency is limited.
Keywords:Holography, Holographic recording materials, Volume holography, Silver halide emulsions
Institute of Physics Publishing
info:eu-repo/semantics/article