Temperature Dependence of the Exciton Lineshape of GeO 2 | Zendy

Fröhlich D. | Zendy; Weber H.J. | Zendy; Wille R. | Zendy; Francini R. | Zendy

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Temperature Dependence of the Exciton Lineshape of GeO 2

Author(s) -

Fröhlich D.,

Weber H.J.,

Wille R.,

Francini R.

Publication year - 1984

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.2221260136

Subject(s) - exciton , phonon , raman spectroscopy , line width , asymmetry , laser , materials science , photon , coupling (piping) , line (geometry) , atomic physics , condensed matter physics , molecular physics , physics , optics , quantum mechanics , geometry , mathematics , metallurgy

Two‐photon measurements are presented of the IS exciton lineshape in GeO 2 between 4.5 and 150 K. With a frequency‐doubled dye laser and a Raman‐shifted Nd:YAG laser the excitonenergy around 4.65 eV can be scanned. The temperature dependence of the total line width can be explained by a theoretical model of exciton‐phonon coupling. Furthermore the results reveal an unexpected asymmetry, which seems to originate from a non‐uniform contribution of optical phonons.

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