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Spectroscopy, Cooperative Upconversion and Optical Gain in Amorphous Al2O3:Yb3+ Waveguides on Silicon

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Abstract

Ridge waveguides in amorphous Al2O3:Yb3+ are produced by reactive co-sputtering and reactive-ion etching. Their spectroscopic properties, optical gain, and cooperative upconversion are studied and explained based on a model of distinct ion classes.

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