Effects Of Photoexcitation Of Self-Trapped Excitons In Insulators

Noriaki ltoh; Katsumi Tanimura

doi:10.1117/12.7977088

1 October 1989 Effects Of Photoexcitation Of Self-Trapped Excitons In Insulators

Noriaki ltoh, Katsumi Tanimura

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Optical Engineering, Vol. 28, Issue 10, 281034 (October 1989). https://doi.org/10.1117/12.7977088

Abstract

Experimental observations of the consequences of generation of excited states of self-trapped excitons in insulators such as alkali halides and alkaline earth fluorides are surveyed. Three types of excited states are distinguished: electron-excited and hole-excited states of self-trapped exciton and host-excited states bound by a self-trapped exciton. The most extensive studies have been carried out for electron-excited states, which are deexcited dominantly by nonradiative transitions. A few examples are given of the photoinduced transformation of an excited self-trapped exciton in these states to a Frenkel pair in alkali halides and alkaline earth fluorides. It is emphasized that under laser irradiation with subgap photon energies, the self-trapped excitons and the Frenkel pairs generated by multiphoton excitation act as a source of one-photon absorption.

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Noriaki ltoh and Katsumi Tanimura "Effects Of Photoexcitation Of Self-Trapped Excitons In Insulators," Optical Engineering 28(10), 281034 (1 October 1989). https://doi.org/10.1117/12.7977088

Published: 1 October 1989

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