Recent research on an acrylamide-based photopolymerizable holographic recording material is presented. The recording characteristics of the material are discussed in detail in terms of sensitivity, diffraction efficiency, recording linearity, resolution limit, and sources of noise. Although the resolution is not sufficient for reflection holography, the recording characteristics are excellent for transmission gratings. The material was found to suffer no shrinkage during recording, and high-diffraction-efficiency slanted gratings were made. Finally, the suitability of this self-developing material to both double-exposure and real-time holographic interferometry is demonstrated.
Work done on the optimisation of a photopolymer holographic recording material is presented. The material consists of a PVA (jolyvinylalcohol) binder, a monomer, a crosslinking monomer, an electron donor and a dye sensitizer which renders the material suitable for recording in the 633nm spectral region. Diffraction gratings were recorded with approximately 80% diffraction efficiency with the optintised system. By changing the relative concentrations of the components in the material, sensitivity was improved by a factor of 5. Total light power remained at approximately 5.5mW for recording.
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