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Updated: Jun 12, 2026

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Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon
Published on: July 17, 2020
Measurement of the refractive-index profile in polycrystalline germanium-silicon alloy GRIN crystals
Applied Optics
|June 5, 2010
Abstract:
The refractive index as a function of spatial coordinate in three Czochralski grown germanium-silicon alloy GRIN crystals has been measured using ac interferometric techniques. The interferometer is capable of high phase resolution and is computer controlled for real-time data processing. The measured refractive-index profiles were compared to theoretical profiles which were calculated from a model based on the segregation effect of silicon in germanium.

