The Origin of Third‐Order Optical Nonlinearity in Exciton Systems

T. Ishihara

doi:10.1002/pssb.2221590143

The Origin of Third‐Order Optical Nonlinearity in Exciton Systems

T. Ishihara

SCI - Physics

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Abstract

The third‐order optical nonlinearity is estimated to be −10⁻⁴ e. s. u. at the exciton resonance in PbI₂ evaporated films from the population oscillation effect. Such a large nonlinearity cannot be explained if the system is regarded as independent oscillators. The origin of the third‐order nonlinearity is examined in the density matrix formalism. The observed large nonlinearity is shown to come from the exciton‐exciton interaction.

Original language	English
Pages (from-to)	371-378
Number of pages	8
Journal	physica status solidi (b)
Volume	159
Issue number	1
DOIs	https://doi.org/10.1002/pssb.2221590143
Publication status	Published - 1990 May 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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abstract = "The third‐order optical nonlinearity is estimated to be −10−4 e. s. u. at the exciton resonance in PbI2 evaporated films from the population oscillation effect. Such a large nonlinearity cannot be explained if the system is regarded as independent oscillators. The origin of the third‐order nonlinearity is examined in the density matrix formalism. The observed large nonlinearity is shown to come from the exciton‐exciton interaction.",

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AB - The third‐order optical nonlinearity is estimated to be −10−4 e. s. u. at the exciton resonance in PbI2 evaporated films from the population oscillation effect. Such a large nonlinearity cannot be explained if the system is regarded as independent oscillators. The origin of the third‐order nonlinearity is examined in the density matrix formalism. The observed large nonlinearity is shown to come from the exciton‐exciton interaction.

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The Origin of Third‐Order Optical Nonlinearity in Exciton Systems

Abstract

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