Abstract

In the present study glass samples of (40 – x)Li₂0 · xNa₂O · 10K₂O · 50B₂O₃ and (40 ‒ x)Li₂O · xK₂O · 10Na₂O · 50B₂O₃ (0 ≤ x ≤ 40 mol %) were prepared by melt quench technique. The cut-off wavelength varies non-linearly when Li₂O is replaced with Na₂O or K₂O. The type of electronic transition in the present glass systems is indirect allowed. Using single oscillator model, the oscillator energy E₀, the dispersion energy E_d, the static refractive index n₀, the oscillator strength S₀ and average oscillator wavelength λ₀ were determined. The ratio of free carrier concentration to the free carrier effective mass N_c/m*, the optical relaxation time τ and ε_∞ the high frequency dielectric constant were determined in the present glass systems. The real and imaginary parts of the optical conductivity dependence of energy in present glasses increases non-linearly with increasing photon energy.

中文翻译：

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混合碱硼酸盐玻璃的光学性能

摘要

在本研究中，玻璃样品为 (40 – x )Li ₂ 0 ·  x Na ₂ O · 10K ₂ O · 50B ₂ O ₃和 (40 -  x )Li ₂ O ·  x K ₂ O · 10Na ₂ O · 50B ₂ O ₃ (0 ≤ x ≤ 40 mol %) 通过熔体淬火技术制备。当 Li ₂ O 被 Na ₂ O 或 K ₂取代时，截止波长非线性变化O. 本玻璃系统中的电子跃迁类型是间接允许的。使用单振子模型，确定了振子能量E ₀、色散能量E _d、静态折射率n ₀、振子强度S ₀和平均振子波长λ ₀  。自由载流子浓度与自由载流子有效质量之比N _c / m *，光学弛豫时间 τ 和 ε _∞在本玻璃系统中测定高频介电常数。当前玻璃中能量的光导率依赖性的实部和虚部随着光子能量的增加而非线性地增加。