Abstract
Holograms were formed on a silver halide photothermographic material without carrying out wet treatment. Amplitude holograms whose gratings consist of rows of developed silver grains were formed, and the maximum diffraction efficiency of the gratings was almost 1.5%. When the amplitude holograms were bleached using bromine gas, they were converted to phase holograms, and the diffraction efficiency increased to a maximum of 6%. All areas turned yellow in color because of the formation of silver bromide. The mechanism of formation of gratings after bleaching has not yet been established. The authors propose that stripes of silver bromide, developer, toner, or other components may be formed by thermal development and subsequent bleaching. These stripes are transparent but have different diffraction indices, and this leads to the formation of gratings.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.