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Measurement of the refractive index of electrically poled soda-lime glass layers using leaky modes

Oven, Robert (2016) Measurement of the refractive index of electrically poled soda-lime glass layers using leaky modes. Applied Optics, 55 (32). pp. 9123-9130. ISSN 1559-128X. E-ISSN 2155-3165. (doi:10.1364/AO.55.009123) (KAR id:58540)

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Electrically poled layers have been formed in soda-lime glass using graphite electrodes in air. The refractive index and thickness of the poled glass layers have been measured by the analysis of leaky optical modes. These modes are supported by the poled layer and can be determined by analysis of the optical reflectivity measured with a prism coupler arrangement. A relatively constant refractive index ~ 1.486 in the poled glass region is measured, which is ~0.03 below the substrate index. The reflectivity data shows that the transition between poled and un-poled glass is very sharp and is consistent with ion transport models. The thickness of the poled glass region is consistent with the removal of Na+ and K+ ions from the poled region. The index and depth data is confirmed by interferometric measurements. The tensile stress in the poled glass layer is also estimated from optical birefringence measurements and is estimated to be ~0.3 GN/m2.

Item Type: Article
DOI/Identification number: 10.1364/AO.55.009123
Additional information: © 2016 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
Uncontrolled keywords: poled layers, soda-lime glass
Subjects: Q Science
Q Science > QC Physics > QC355 Optics
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: Robert Oven
Date Deposited: 01 Dec 2016 15:41 UTC
Last Modified: 16 Feb 2021 13:39 UTC
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