Saturation of the fullerite photodarkening at high laser energy fluences

The simple theory of the fullerite photodarkening dependence on the laser energy fluence is presented. The theory is based on the realistic electron band structure of fullerites. It is shown that this theory is sufficient for the qualitative description of the nonlinear optical properties of fulleri...

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Bibliographic Details
Published in:Chemical physics letters 1994-07, Vol.224 (5), p.493-500
Main Authors: Farztdinov, V.M., Lozovik, Yu.E., Letokhov, V.S.
Format: Article
Language:English
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Summary:The simple theory of the fullerite photodarkening dependence on the laser energy fluence is presented. The theory is based on the realistic electron band structure of fullerites. It is shown that this theory is sufficient for the qualitative description of the nonlinear optical properties of fullerites in the energy region around ħω=2 eV. The physical effects that appear at high excitation levels are disccused. The multi-step ionization and wide-band luminescence are predicted.
ISSN:0009-2614
1873-4448
DOI:10.1016/0009-2614(94)00579-6