Light Source Position Dependence of Evanescent Wave Coupling Effect in Narrow GaAs/AlGaAs Ridge Structure

The light source position dependence of the evanescent wave coupling effect in a sub-wavelength-sized GaAs/AlGaAs ridge structure was investigated using the theoretical simulation and temperature-dependent emission pattern measurements. It was found that the evanescent wave coupling effect could be...

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Veröffentlicht in:Japanese Journal of Applied Physics 2012-04, Vol.51 (4), p.040205-040205-3
Hauptverfasser: Wang, Xue-Lun, Takahashi, Tokio
Format: Artikel
Sprache:eng
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Zusammenfassung:The light source position dependence of the evanescent wave coupling effect in a sub-wavelength-sized GaAs/AlGaAs ridge structure was investigated using the theoretical simulation and temperature-dependent emission pattern measurements. It was found that the evanescent wave coupling effect could be realized for a light source located at any position of the top-flat quantum well (QWL), although the emissions transformed from evanescent waves began to get emitted in directions that formed an increasingly larger angle with respect to the surface normal of the ridge flat facet when the light source was moved from the center to the edge of the flat QWL.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.51.040205