Linear and nonlinear optical properties of Ag nanowire polarizing glass
Linear and nonlinear optical properties of Ag nanowire polarizing glass
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银纳米线偏光玻璃的线性和非线性光学特性
DOI：
10.1002/adfm.200600096
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发表时间：
2006-12-04
影响因子：
19
通讯作者：
Ren, Jin-Jun
中科院分区：
文献类型：
--
作者：
Wang, Qu-Quan;Han, Jun-Bo;Ren, Jin-Jun
采用热拉伸 - 还原技术制备了一种含银纳米棒的R₂O - B₂O₃ - SiO₂（R = Li，Na，K）极化玻璃。嵌入的银纳米棒的横向和纵向等离子体吸收峰分别在460和720 nm附近。当激光偏振方向平行于银纳米棒的长轴时，非线性吸收系数β = 0.82 cm GW⁻¹，非线性折射率n₂ = -1.5×10⁻⁴ cm² GW⁻¹。当光的偏振方向垂直于银纳米棒的长轴时，β = 0.12 cm GW⁻¹，n₂ = -7.2×10⁻⁵ cm² GW⁻¹，并且分别获得了合适的单光子和双光子品质因数（FOM），W = 1.6和T = 0.16，满足了全光开关应用中W > 1且T < 1的要求，其中W是单光子品质因数，T是双光子品质因数。
An R2O-B2O3-SiO2 (R=Li, Na, K) polarizing glass containing Ag nanorods is prepared by thermal elongation-reduction technology. The transverse and longitudinal plasmon absorption peaks of the embedded Ag nanorods are near 460 and 720 nm, respectively. When the polarization of the laser is parallel to the long axis of the Ag nanorods, the nonlinear absorption coefficient beta = 0.82 cm GW(-1) and the nonlinear refractive index n(2) = -1.5 x 10(-4) cm(2) GW(-1). When the polarization of light is perpendicular to the long axis of the Ag nanorods beta = 0.12 cm GW(-1) and n(2) = -7.2 x 10(-5) cm(2) GW(-1) and the appropriate one- and two-photon figures of merit (FOM), W = 1.6 and T = 0.16, respectively, are obtained, which satisfies the demand, W > 1. and T< 1, for applications in all optical switching, where W is a one-photon FOM, and T is a two-photon FOM.