- We report the observation of an ultrafast optical nonlinearity in ZnSe/ZnSeS superlattices which arises from the generation of an internal field due to charge separation caused by preferential hole trapping. The absorption recovery is extremely fast, ∼ 650 fs, being due to the subsequent localisation of electrons.
- Journal of Crystal Growth
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Ultrafast electric field induced nonlinear response in ZnSe/ZnSeS superlattices
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