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TEM Investigation of the Core/Cladding Interface of La2O3-Al2O3-SiO2 Glasses for High Power Fiber Lasers

Published online by Cambridge University Press:  11 February 2011

Shang-Cong Cheng  and
Matthew J. Dejneka
Shang-Cong Cheng
Affiliation:
Science & Technology Division, Corning Incorporated Corning, New York 14831, USA
Matthew J. Dejneka
Affiliation:
Science & Technology Division, Corning Incorporated Corning, New York 14831, USA
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Abstract

For fabricating Yb3+ doped La2O3-Al2O3-SiO2 glasses for high-powered fiber lasers, it is critical to choose the right core glass composition to obtain a high numerical aperture and to avoid phase separation. TEM techniques were used to study the relationship between the core composition and phase separation. In the study, inter-diffusion between the core and cladding glasses was found. The inter-diffusion caused large density fluctuation in the region of the core/cladding interface in fibers containing relatively high concentrations of La2O3. The TEM results were used to optimize the chemical composition of the core glass for high-power fiber lasers.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 751: Symposium Z – Structure-Property Relationships of Oxide Surfaces and Interfaces II , 2002 , Z3.8
Copyright
Copyright © Materials Research Society 2003

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References

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