The Influence of Imperfections and Absorption on the Performance of a GaAs/AlOx High-Contrast Grating for Monolithic Integration With 980 nm GaAs-Based VCSELs
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چکیده
This paper discusses the influence of fabrication imperfections and absorption on high contrast grating (HCG) reflectivity and reveals that HCGs show considerable tolerance to both factors. A fully vectorial optical numerical model was used to design an HCG for use as the top mirror of a 980 nm GaAsbased vertical-cavity surface-emitting laser. Parameters providing a high degree of reflectivity were determined with special attention to optimizing the low refractive index layer.
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تاریخ انتشار 2013