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CsCl-modified Ga2S3–La2S3 glasses: Structural approach by x-ray absorption spectroscopy

Published online by Cambridge University Press:  31 January 2011

A. Y. Ramos ,
M. Grisolía Cardona ,
H. C. N. Tolentino ,
M. C. M. Alves ,
N. Watanabe ,
O. L. Alves  and
L. C. Barbosa
A. Y. Ramos*
Affiliation:
Laboratório Nacional de Luz Síncroton, CP 6192, 13083-970 Campinas Brazil, and Laboratoire de Minéralogie-Cristallographie, CNRS-UMR7590, University of Paris VI, Paris, France
M. Grisolía Cardona
Affiliation:
Laboratório Nacional de Luz Síncroton, CP 6192, 13083-970 Campinas Brazil, and Departmento de Química, Universidad de los Andes, Mérida, Venezuela
H. C. N. Tolentino
Affiliation:
Laboratório Nacional de Luz Síncroton, CP 6192, 13083-970 Campinas, Brazil
M. C. M. Alves
Affiliation:
Laboratório Nacional de Luz Síncroton, CP 6192, 13083-970 Campinas, Brazil
N. Watanabe
Affiliation:
Laboratório Nacional de Luz Síncroton, CP 6192, 13083-970 Campinas Brazil, and Laboratoire Química do Estado Sólido, UNICAMP, Box 6154, 13083-970, Campinas, Brazil
O. L. Alves
Affiliation:
Laboratoire Química do Estado Sólido, UNICAMP, Box 6154, 13083-970 Campinas, Brazil
L. C. Barbosa
Affiliation:
Laboratório de Materiais Vítreos, UNICAMP, Box 6165, 13083-970, Campinas, Brazil
*
a)Address all correspondence to this author. e-mial: aramos@lnls.br
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Abstract

Gallium–lanthanum sulfide glasses are potential hosts for 1.3-μm optical fiber amplifiers and for fiber lasers in the near and middle infrared. In these glasses the addition of CsCl increases the thermal stability region making possible to draw optical fibers, without altering the optical properties of the glass. Ga2S3–La2S3 glasses modified by 10 to 40% CsCl have been studied by x-ray absorption spectroscopy, to investigate the structural role of CsCl. The chlorine environment is found similar to that in CsCl. The gallium-based network is composed from almost regular tetrahedra weakly connected by corners and is not altered by the addition of CsCl.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 5 , May 2001 , pp. 1349 - 1353
Copyright
Copyright © Materials Research Society 2001

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