Real-time direct measurement of diffraction efficiency of reflection gratings in photopolymer recording materials

摘要: Photopolymer recording systems have received a great deal of attention as material for optical information storage and production diffraction gratings. Before using these materials in such systems, it is important to characterize them understand the processes which run during holographic recording, so that itself can be optimized obtain an efficient grating. In this contribution, we present new method real-time measurement response reflection gratings process. Usually, process photopolymers characterized by transmission grating growth. This does not allow measuring growth with very narrow spatial period configuration. The approach based on idea illuminated white light at different angle from one efficiency continuously measured spectrophotometer. Kogelnik’s coupled wave theory used theoretical background contribution. Experimentally, photopolymer Bayfol HX has been tested configuration curves show good applicability detection method.