适用于全光开关的[(C_3H_7)_4N][Au(C_3S_5)_2]三阶非线性光学性质研究  

Third-order Nonlinear Optical Properties Study of [(C_3H_7)_4N][Au(C_3S_5)_2] Applied to All-optical Switches

作　　者：李国超[1] 任诠[1] 王新强[2] 杨洪亮[1] 陈经纬[1] 蔡宁宁[1] 

机构地区：[1]山东大学信息科学与工程学院,济南250100 [2]山东大学晶体材料国家重点实验室,济南250100

出　　处：《光子学报》2011年第4期547-551,共5页Acta Photonica Sinica

基　　金：国家自然科学基金(No.60778037;No.50772059);高等学校全国优秀博士学位论文专项资金(No.200539)资助

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1×10-3mol/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 064nm,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-1.76×10-15m2/W、三阶非线性极化率χ(3)为9.37×10-10esu.结果表明,该材料在全光开关方面具有潜在的应用价值.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.

关 键 词：三阶非线性光学性质 全光开关 DMIT类聚合物 Z扫描技术 

分 类 号：O437[机械工程—光学工程]