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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 31,
  • Issue 23,
  • pp. 3853-3858
  • (2013)

The Influence of Imperfections and Absorption on the Performance of a GaAs/AlO $_{\rm x}$ High-Contrast Grating for Monolithic Integration With 980 nm GaAs-Based VCSELs

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Abstract

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 GaAs-based vertical-cavity surface-emitting laser. Parameters providing a high degree of reflectivity were determined with special attention to optimizing the low refractive index layer.

© 2013 IEEE

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