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A team working at the Centre for Modem Optics (DMU) at DeMontfort University in England has devised a new processing method for silver halide holographic emulsions which enhances their optical properties, giving very high diffraction efficiencies such as are more normally associated with dichromated gelatin and photopolymer.
Based upon a procedure for converting silver halide emulsions into dichromated gelatin recording material that has been known for over 25 years, the process works with commercially available holographic silver halide materials such as those from Slavich and Agfa Geveart. It was developed for high efficiency HOEs by Jong Man Kim of the Samsung …