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Proceedings Paper

Segregation and inhomogeneities in photorefractive SBN fibers
Author(s): Sandor Erdei; Ludwig Galambos; Isao Tanaka; Lambertus Hesselink; Frank W. Ainger; Leslie Eric Cross; Robert S. Feigelson
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Paper Abstract

Ce doped and undoped SrxBa1-xNb2O6 (SBN) fibers grown by the laser heated pedestal growth (LHPG) technique in Stanford University were investigated by 2D scanning electron microprobe analysis. The SBN fibers grown along c [001] or a [100] axes often show radially distributed optical inhomogeneities (core effects) of varying magnitude. Ba enrichment and Sr reduction were primarily detected in the core which can be qualitatively described by a complex-segregation effect. This defect structure as a complex-congruency related phenomenon modified by the composition-control mechanism of LHPG system. Its radial dependence of effective segregation coefficient is described by the modified Burton-Prim- Slichter equation.

Paper Details

Date Published: 25 October 1996
PDF: 6 pages
Proc. SPIE 2849, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications II, (25 October 1996); doi: 10.1117/12.255473
Show Author Affiliations
Sandor Erdei, The Pennsylvania State Univ. (United States)
Ludwig Galambos, Stanford Univ. (United States)
Isao Tanaka, Yamanashi Univ. (Japan)
Lambertus Hesselink, Stanford Univ. (United States)
Frank W. Ainger, The Pennsylvania State Univ. (United States)
Leslie Eric Cross, The Pennsylvania State Univ. (United States)
Robert S. Feigelson, Stanford Univ. (United States)


Published in SPIE Proceedings Vol. 2849:
Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications II
Francis T. S. Yu; Shizhuo Yin, Editor(s)

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