Enhancement of Optical Birefringence in Tellurite Glasses Containing Silver Nanoparticles Induced via Thermal Poling
Enhancement of Optical Birefringence in Tellurite Glasses Containing Silver Nanoparticles Induced via Thermal Poling
复制标题
通过热极化增强含银纳米粒子的亚碲酸盐玻璃的光学双折射
DOI：
10.1016/j.jnoncrysol.2010.11.089
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发表时间：
2011
影响因子：
3.5
通讯作者：
K.Tanaka
中科院分区：
文献类型：
--
作者：
S.Murai;R.Hattori;T.Matoba;K.Fujita;K.Tanaka
在碲酸盐玻璃中，通过热极化引入银纳米颗粒（Ag NPs），观察到光学双折射的波长选择性增强。双折射表现为线性偏振光的旋光;在Ag纳米颗粒的局域表面等离子体共振（LSPR）的波长附近观察到大的旋光。光轴沿着热极化过程中施加的电场取向，表明通过热极化在玻璃基质中诱导的双折射被LSPR周围的NP大幅增强。由于基质的双折射性，LSPR的波长根据入射光的偏振状态而移动，这又通过Kramers-Kronig关系引起折射率的真实的部分的偏振依赖性。
Wavelength-selective enhancement of optical birefringence has been observed in a tellurite glass containing silver nanoparticles (Ag NPs) induced via thermal poling. The birefringence appears as an optical rotation of linearly polarized light; a large optical rotation is observed at around the wavelength of localized surface plasmon resonance (LSPR) of Ag NPs. The optic axis is oriented along the electric field applied during the thermal poling, suggesting that birefringence induced in the glass matrix through the thermal poling is drastically enhanced by the NPs at around the LSPR. Because of the birefringence of the matrix, the wavelength of LSPR shifts depending on the polarization state of the incident light, which in turn induces the polarization dependence of the real part of the refractive index via the Kramers–Kronig relation.