Exciton self-trapping in molecular media with an elastic dipole moment |
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Authors: | A A Zabolotskii |
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Institution: | (1) Institute of Automation and Electrometry, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090, Russia |
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Abstract: | Exciton self-trapping in a molecular medium is considered within a self-consistent model taking into account the change in the dipole moment as a result of a displacement of molecules and the resonance interaction with an electromagnetic field. New mechanisms and specific features of the formation of localized structures in quasi-one-dimensional molecular structures are investigated. It is shown that the dependence of the dipole moment on molecular vibrations leads to new conditions for exciton self-trapping and intrinsic optical bistability, as well as for the formation of electromagnetically induced transparency. The theory proposed is used to explain the specific features of exciton self-trapping in a conjugated polymer and J aggregates of dyes under the action of an external laser field. |
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