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Title: Glass structure and optical nonlinearities in thallium(I) tellurium (IV) oxide glasses

Abstract

The relationships between structure and nonlinear optical response at 1.5 {micro}m in thallium(I) tellurite glasses are investigated. Usually in tellurite glasses, the introduction of a modifier ion changes the basic structural TeO{sub 4} disphenoid entity progressively into a TeO{sub 3} trigonal bipyramid via an intermediate TeO{sub 3+1} polyhedron. This evolution leads to a decrease of the nonlinear refractive index n{sub 2}. Nevertheless, if a modifier ion such as Tl{sup +} also has an ns{sup 2} lone electron pair, n{sub 2} increases although the same structural evolution is observed around the tellurium atoms. This result is related to the hyperpolarizability of the thallium oxygen entities, which has been evidenced by the structural study of both thallium(I) tellurite crystals and glasses of the same compositions. With this solid state chemistry approach, the highest nonlinear refractive index measured at 1.5 {micro}m (n{sub 2} = 9.10{sup {minus}19} m{sup 2}/W) and reported in oxide glasses has been obtained.

Authors:
; ;  [1]
  1. ESA CNRS, Limoges (France). Lab. de Materiaux Ceramiques et Traitements de Surface [and others
Publication Date:
OSTI Identifier:
696668
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 146; Journal Issue: 2; Other Information: PBD: Sep 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; MOLECULAR STRUCTURE; OPTICAL PROPERTIES; THALLIUM OXIDES; TELLURIUM OXIDES; GLASS; RAMAN SPECTRA; CHEMICAL COMPOSITION; ATOMIC MODELS; MOLECULES; EXPERIMENTAL DATA

Citation Formats

Jeansannetas, B., Blanchandin, S., and Thomas, P. Glass structure and optical nonlinearities in thallium(I) tellurium (IV) oxide glasses. United States: N. p., 1999. Web. doi:10.1006/jssc.1999.8355.
Jeansannetas, B., Blanchandin, S., & Thomas, P. Glass structure and optical nonlinearities in thallium(I) tellurium (IV) oxide glasses. United States. doi:10.1006/jssc.1999.8355.
Jeansannetas, B., Blanchandin, S., and Thomas, P. Wed . "Glass structure and optical nonlinearities in thallium(I) tellurium (IV) oxide glasses". United States. doi:10.1006/jssc.1999.8355.
@article{osti_696668,
title = {Glass structure and optical nonlinearities in thallium(I) tellurium (IV) oxide glasses},
author = {Jeansannetas, B. and Blanchandin, S. and Thomas, P.},
abstractNote = {The relationships between structure and nonlinear optical response at 1.5 {micro}m in thallium(I) tellurite glasses are investigated. Usually in tellurite glasses, the introduction of a modifier ion changes the basic structural TeO{sub 4} disphenoid entity progressively into a TeO{sub 3} trigonal bipyramid via an intermediate TeO{sub 3+1} polyhedron. This evolution leads to a decrease of the nonlinear refractive index n{sub 2}. Nevertheless, if a modifier ion such as Tl{sup +} also has an ns{sup 2} lone electron pair, n{sub 2} increases although the same structural evolution is observed around the tellurium atoms. This result is related to the hyperpolarizability of the thallium oxygen entities, which has been evidenced by the structural study of both thallium(I) tellurite crystals and glasses of the same compositions. With this solid state chemistry approach, the highest nonlinear refractive index measured at 1.5 {micro}m (n{sub 2} = 9.10{sup {minus}19} m{sup 2}/W) and reported in oxide glasses has been obtained.},
doi = {10.1006/jssc.1999.8355},
journal = {Journal of Solid State Chemistry},
number = 2,
volume = 146,
place = {United States},
year = {1999},
month = {9}
}