Temperature Dependence of Exciton Linewidth in CsI and CsBr | Zendy

Beerwerth F. | Zendy; Fröhlich D. | Zendy; Leinweber V. | Zendy

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Temperature Dependence of Exciton Linewidth in CsI and CsBr

Author(s) -

Beerwerth F.,

Fröhlich D.,

Leinweber V.

Publication year - 1988

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.2221450117

Subject(s) - laser linewidth , exciton , biexciton , phonon , spectroscopy , halide , photon , atomic physics , condensed matter physics , chemistry , materials science , physics , optics , quantum mechanics , laser , inorganic chemistry

The temperature dependence of the linewidth of the lowest two Γ 4 −excitons in CsI and in CsBr and of a very narrow Γ 5 −exciton in CsI is reported. All spectra are measured by three‐photon spectroscopy. The analysis of the experimental results allows conclusions about the decay mechanism of excitons in alkali halides. The temperature dependent broadening is quantitatively described by taking into account exciton—phonon interaction.

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