Abstract
Nonlinear triplet-triplet absorption in organic molecules can be used to construct all-optical switches and spatial light modulators (SLMs). SLM experiments were performed on eosin/PVA films using Ar laser light for writing and He-Ne laser for reading. The results indicate that triplet quenching is a limiting factor in the SLM performance. Better results in terms of writing intensity and contrast ratio are obtained in transient waveguide switch configuration.
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