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Processing and Optical Properties of YAG- and Rare-Earth-Aluminum Oxide-composition Glass Fibers

Published online by Cambridge University Press:  14 March 2011

Richard Weber ,
Johan Abadie ,
Thomas Key ,
April Hixson ,
Paul Nordine ,
Yannick Feillens ,
Hiroshi Noguchi ,
Jonathan Kurz ,
Brandon Wood  and
Michel Digonnet
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Richard Weber
Affiliation:
Containerless Research, Inc., Evanston, IL 60201, U.S.A.
Johan Abadie
Affiliation:
Containerless Research, Inc., Evanston, IL 60201, U.S.A.
Thomas Key
Affiliation:
Containerless Research, Inc., Evanston, IL 60201, U.S.A.
April Hixson
Affiliation:
Containerless Research, Inc., Evanston, IL 60201, U.S.A.
Paul Nordine
Affiliation:
Containerless Research, Inc., Evanston, IL 60201, U.S.A.
Yannick Feillens
Affiliation:
Ginzton Laboratory, Stanford University, Stanford, CA 94304, U.S.A.
Hiroshi Noguchi
Affiliation:
Ginzton Laboratory, Stanford University, Stanford, CA 94304, U.S.A.
Jonathan Kurz
Affiliation:
Ginzton Laboratory, Stanford University, Stanford, CA 94304, U.S.A.
Brandon Wood
Affiliation:
Ginzton Laboratory, Stanford University, Stanford, CA 94304, U.S.A.
Michel Digonnet
Affiliation:
Ginzton Laboratory, Stanford University, Stanford, CA 94304, U.S.A.
Martin Fejer
Affiliation:
Ginzton Laboratory, Stanford University, Stanford, CA 94304, U.S.A.
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Abstract

Rare-earth-aluminum oxide-composition glass fibers 5-50 μm in diameter and containing up to 50 mole % rare-earth oxide were drawn from undercooled liquids 550-650 K below the equilibrium melting point. The fibers have tensile strengths of ∼6 GPa, glass transition temperatures of ∼1150 K, and infrared transmission up to ∼5500 nm. The optical properties of erbium-doped fibers containing up to 12.5 mole % Er2O3 were investigated. The 1/e lifetime of the 4I13/2 excited state was 0.8-7 ms, decreasing with increasing Er concentration. Amplified spontaneous emission measurements indicate extremely broadband spectra, up to 135 nm (3-dB width) in 0.5 mole % fibers. Although this result is encouraging, the gain bandwidth, which has not been measured, is likely narrower. Glass fibers were crystallized by heat treatment under tension at temperatures of 1300-1900 K to form flexible, creep resistant polycrystalline monofilaments with tensile strengths up to 2.4 GPa.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 702: Symposium U – Advanced Fibers, Plastics, Laminates and Composites , 2001 , U5.8.1
Copyright
Copyright © Materials Research Society 2002

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