July 2024
Intermediate to advanced
280 pages
12h 52m
English
Content preview from The Essential Handbook of Polymer Terms and Attributes
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132 Photorefractive Polymers
Photorefractive polymers are polymer materials that exhibit a temporary change in refractive index when exposed to light. The ease with which the chemical composition can be changed in polymer materials makes the photorefractive effect more controllable.
The photorefractive effect refers to the phenomenon that is observed in materials in which refractive index modulation is induced by the space-charge field that results from the redistribution of positive and negative charge carriers separated through photoexcitation. This was first reported in inorganic crystals of lithium niobate (LiNbO3) and lithium tantalate (LiTaO3) and was observed through heterogeneous optically induced refractive ...
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