Structure and Non-linear Optical Performance of TeO₂-Nb₂O₅-ZnO Glasses

Abstract

The non-linear optical performance and structure of TeO2-Nb2O5-ZnO glasses was investigated as a function of ZnO content. The third-order non-linear optical susceptibility (χ(3)) as measured by a Degenerate Four Wave Mixing (DFWM) method, initially increased with increasing ZnO content to about 8.2 × 10−13 esu for a glass containing 2.5 wt% ZnO, and then decreased to 5.9 × 10−13 esu as the ZnO content increased to 10 wt%. There was no noticeable change as the ZnO content increased from 10 to 15 wt%. The non-linear optical response time, which caused electron cloud deformation, was from 450 to 500 fs. The structure of these glasses as analyzed by Raman spectroscopy and FT-IR spectra, was affected by the addition of ZnO up to 5 wt%, when, it is believed, the Zn2+ ions occupied the interstitial positions in the glass network by replacing the Nb5+ ions. The replaced Nb5+ ions occupied the network forming positions as the Te4+ ions. Increasing ZnO > 5 wt% did not have any further effect on the glass structure.

Department(s)

Materials Science and Engineering

Keywords and Phrases

S440; N200; T110

International Standard Serial Number (ISSN)

0022-3093; 1873-4812

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2004 Elsevier, All rights reserved.

Publication Date

01 May 2004

Link to Full Text

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