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- W2094044293 abstract "Reflectance spectroscopy has been applied to the study of lattice-matched InGaAs(P)/InP single epitaxial layers and InP/InGaAs(P) double-heterostructure systems on InP substrates. In the spectral regime where the materials are transparent, the reflectance spectra exhibit periodic oscillations. The amplitude of the oscillations is related to the magnitude of the refractive index discontinuity. An analytical expression has been derived which relates the modulation amplitude of these oscillations to the thickness and refractive index (composition) of the epitaxial layers. This allows for refractive index (composition) determination from reflectance alone without prior knowledge of the thickness of the epitaxial layers. Experimental Fourier transform infrared measurements have been used to verify this relationship for InGaAs(P) layers ranging from As mole fraction 0.18 to 1. Values of the composition of the layers obtained by this method are in good agreement with values obtained using photoluminescence measurements." @default.
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- W2094044293 date "1990-09-15" @default.
- W2094044293 modified "2023-10-18" @default.
- W2094044293 title "InGaAsP compositional determination from reflectance spectroscopy of InGaAsP/InP heterostructures" @default.
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- W2094044293 doi "https://doi.org/10.1063/1.346427" @default.
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