Abstract

The changes of holographic characteristics of photopolymer induced by temperature are studied experimentally. The results show that the exposure sensitivity increases with the increase of temperature. The maximum diffraction efficiency and the final maximum diffraction efficiency increase with the increase of temperature when the temperature is lower than Tg (glass transition temperature), while they decrease with the increase of temperature when the temperature is higher than Tg. The effect of the change of temperature on the saturation refractive index modulation is very weak.

© 2005 Chinese Optics Letters

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