光子学报, 2011, 40 (4): 547, 网络出版: 2011-05-10
适用于全光开关的[(C3H7)4N][Au(C3S5)2]三阶非线性光学性质研究
Third-order Nonlinear Optical Properties Study of [(C3H7)4N][Au(C3S5)2] Applied to All-optical Switches
三阶非线性光学性质 全光开关 DMIT类聚合物 Z扫描技术 Third-order optical nonlinearity All-optical switching DMIT complex Z-scan technique
摘要
合成了一种金属有机配合物[(C3H7)4N][Au(C3S5)2]. 配制了浓度为1×10-3 mol/L的[(C3H7)4N][Au(C3S5)2]/乙腈溶液,并用旋涂法制备了掺杂浓度质量比为1%的[(C3H7)4N][Au(C3S5)2]/PMMA复合薄膜. 运用Z扫描方法, 分别研究了样品溶液和薄膜在波长为1 064 nm,脉宽为20 ps条件下的三阶非线性光学性质. 研究发现薄膜的三阶非线性极化率χ(3)比溶液高出三个数量级. 其中,薄膜的非线性折射率n2为-1.76×10-15 m2/W、三阶非线性极化率χ(3)为9.37×10-10 esu. 结果表明,该材料在全光开关方面具有潜在的应用价值.
Abstract
A novel novel dmit2- salt: [(C3H7)4N][Au(C3S5)2] was synthesized. Its acetonitrile solution with concentration 1.0 ×10-3 mol/L was prepared. The thin film with [(C3H7)4N][Au(C3S5)2]-doped in PMMA was fabricated spin-coating on a quartz substrate. The third-order optical nonlinearities of sample solution and film were investigated by using the laser Z-scan technique with 20 ps pulses width at 1 064 nm. The experimental results show that the third-order nonlinear susceptibility χ(3) improves an approximate 3 orders of magnitude by the PrAu film over the solution. The nonlinear refraction coefficient n2 and the third-order nonlinear susceptibility χ(3) of the PrAu film were obtained to be 1.76×10-15 m2/W and 9.37×10-10 esu, respectively. The results suggest that PrAu will be a promising material for all-optical switching devices.
李国超, 任诠, 王新强, 杨洪亮, 陈经纬, 蔡宁宁. 适用于全光开关的[(C3H7)4N][Au(C3S5)2]三阶非线性光学性质研究[J]. 光子学报, 2011, 40(4): 547. LI Guo-chao, REN Quan, WANG Xin-qiang, YANG Hong-liang, CHEN Jing-wei, CAI Ning-ning. Third-order Nonlinear Optical Properties Study of [(C3H7)4N][Au(C3S5)2] Applied to All-optical Switches[J]. ACTA PHOTONICA SINICA, 2011, 40(4): 547.