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Polarizability, volume expansion, and stress contributions to the refractive index change of Cu~(+)-Na~(+) ion exchanged waveguides in glass

机译:玻璃中Cu〜(+)-Na〜(+)离子交换波导的极化率,体积膨胀和应力对折射率变化的贡献

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摘要

The refractive index of optical waveguides formed by electric field assisted Cu~(+)-Na~(+) ion exchange in two types of glass is measured. Assuming, as in a previously published work, that the observed refractive index increase is solely due to polarizability changes, the difference in electronic polarizability between Cu~(+) and Na~(+) ions is determined by applying the Lorentz-Lorenz equation to the data. In our work, the concentration of exchanged ions, which is a necessary input to the Lorentz-Lorenz equation, is determined by combining optical data and electrical data obtained during the exchange. Values for the electronic polarizability difference are in agreement with that in the literature. However, when a correction is made, taking into consideration the measured volume expansion and stress in the glass, the calculated electronic polarizability difference is shown to increase by 19percent.
机译:测量了两种类型的玻璃中由电场辅助的Cu〜(+)-Na〜(+)离子交换形成的光波导的折射率。假设像以前发表的著作一样,观察到的折射率增加完全是由于极化率的变化所致,因此,通过将Lorentz-Lorenz方程应用于,可以确定Cu〜(+)和Na〜(+)离子之间电子极化率的差异。数据。在我们的工作中,交换离子的浓度是洛伦兹-洛伦茨方程式的必要输入,是通过将交换过程中获得的光学数据和电学数据结合起来确定的。电子极化率差异的值与文献中的一致。但是,在进行校正时,考虑到所测量的玻璃中的体积膨胀和应力,计算出的电子极化率差异会增加19%。

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  • 来源
    《Applied optics》 |2011年第26期|共7页
  • 作者

    Robert Oven;

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