Measurement of the quality of holographic recording materials using a narrow laser beam

In this paper, the holographic recording materials is thought as a scattering object, while a laser beam illuminates to the materials, the scattering light must be emerged. For the reconstructing hologram, the scattering light is thought as the scattering noise, it comes from the scattering particles. By using a narrow laser beam illuminates to the recording plate and measures the scattering and diffraction light intensity and the size of diffraction ring, the scattering noise and the size of the particle of the recording materials can be measured respectively. As the size of the particle of the recording materials determines the resolving power of holographic plate, the resolving power determines the quality of hologram, so the measurement of the size of the particle of the recording materials is very important. This paper also presents some new methods to measure the quality of holographic plate, model plate, model plate and PET materials by using the diffraction pattern of a narrow laser beam. The experimental results shows these new methods with wide measuring range, high precision and short measuring time are very practical.