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Excitonic properties in ZnSe/ZnSxSe1-x strained-layer superlattices by one- and two-photon spectroscopy
Full text linkExcitonic properties of ZnSe/ZnS0.18Se0.82 strained-layer superlattices have been investigated by means of one- and two-photon absorption spectroscopy. Heavy- and light-hole excitons associated with n=1,2 subbands have been observed and experimental evidence of 2s states in these systems has been obtained. Experimental exciton transition energies have been found to be in good agreement with theoretical predictions considering strain and confinement effects. The different selection rules governing linear and nonlinear absorption processes have been verified and some violations of them have been observed. Furthermore, exciton binding energy has been measured and compared with the result of a recent theoretical model
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Polarization dependence of two-photon absorption in ZnSe/ZnSSe strain-layer superlattices"
No full textPolarization dependence of two-photon absorption in ZnSe/ZnSSe strained-layer superlattices
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Optical anisotropy investigation in ZnCdSe/ZnSe multi-quantum wells by two-photon spectroscopy
No full textMeasurements of multiphoton absorption coefficients in ZnSe/ZnSSe strained –layer superlattices
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