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Optica Publishing Group
  • Conference on Lasers and Electro-Optics/Pacific Rim 2007
  • (Optica Publishing Group, 2007),
  • paper FE1_5

Near-infrared Near-field Imaging Spectroscopy of Localized Electronic States due to Composition Fluctuation in GaInNAs Quantum Wells

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Abstract

Near-field photoluminescence spectroscopy of a GaInNAs quantum well with a spatial resolution of 50–150 nm (λ/20-λ/8) was performed to visualize the bandgap fluctuation, which reflects the nonuniform distribution of N and In atoms. We quantitatively estimate the real-space potential profile and fluctuation of N concentration in combination with numerically solving Schrodinger equation.

© 2007 IEEE

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