Abstract

Analogues are obtained of Fresnel's formulas for the reflectivity and transmission of light in the exciton absorption range. Boundary conditions for electromagnetic waves in absorbing media obtained in a previous paper and following from them the law of light refraction are used. Calculation of the light propagation in the An = 1-exciton absorption range in CdS crystals is in good agreement with the experiment. Es werden Analogua der Fresnelschen Formeln fur das Reflexionsvermogen und die Transmission von Licht im Exzitonenabsorptionsbereich erhalten. Dabei werden die Grenzbedingungen fur elektromagnetische Wellen in absorbierenden Medien aus einer fruheren Arbeit und daraus folgend das Lichtbrechungsgesetz benutzt. Die Berechnung der Lichtausbreitung im An = 1-Exzitonenabsorptionsbereich von CdS-Kristallen ist in guter Ubereinstimmung mit dem Experiment.

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