物理化学学报 >> 2012, Vol. 28 >> Issue (04): 942-948.doi: 10.3866/PKU.WHXB201202201

光化学和辐射化学 上一篇    下一篇

1,3-二硫杂环戊烯-2-硫酮-4,5-二巯基类复合物在不同波长下的三阶非线性光学性质

陈经纬1, 任诠1, 王新强2, 杨旭东1, 李廷斌3, 杨洪亮1, 朱陆益2, 张敬楠1, 李国超1   

  1. 1. 山东大学光学系, 济南 250100;
    2. 山东大学晶体材料国家重点实验室, 济南 250100;
    3. 泰山学院材料与化学工程系, 山东泰安 271021
  • 收稿日期:2011-12-09 修回日期:2012-01-16 发布日期:2012-03-21
  • 通讯作者: 陈经纬 E-mail:chenjingwei@mail.sdu.edu.cn
  • 基金资助:

    国家自然科学基金(60778037, 50772059, 11004123), 高等学校全国优秀博士学位论文专项资金(200539), 山东省自然科学基金(ZR2009GQ007), 国家博士后科研基金(20100470040)及山东省中青年科学家奖励基金(BS2011CL025)资助项目

Third-Order Nonlinear Optical Properties of 1,3-Dithiole-2-thione- 4,5-dithiolate Compounds at Different Wavelengths

CHEN Jing-Wei1, REN Quan1, WANG Xin-Qiang2, YANG Xu-Dong1, LI Ting-Bin3, YANG Hong-Liang1, ZHU Lu-Yi2, ZHANG Jing-Nan1, LI Guo-Chao1   

  1. 1. Department of Optics, Shandong University, Jinan 250100, P. R. China;
    2. State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China;
    3. Department of Materials and Chemical Engineering, Taishan University, Tai'an 271021, Shandong Province, P. R. China
  • Received:2011-12-09 Revised:2012-01-16 Published:2012-03-21
  • Contact: CHEN Jing-Wei E-mail:chenjingwei@mail.sdu.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (60778037, 50772059, 11004123), Foundation of National Excellent Doctoral Dissertation of China (200539), Natural Science Foundation of Shandong Province, China (ZR2009GQ007), China Postdoctoral Science Foundation (20100470040), and Youth Scientist Fund of Shandong Province, China (BS2011CL025).

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摘要： 合成了两种新的金属双噻吩类复合物: (苄基三乙基铵)双(1,3-二硫杂环戊烯-2-硫酮-4,5-二巯基)-金(BTEAADT)和(苄基三乙基铵)双(1,3-二硫杂环戊烯-2-硫酮-4,5-二巯基)-镍(BTEANDT). 采用Z扫描方法, 在皮秒脉冲下, 分别测试了两种材料的乙腈溶液在532 和1064 nm 的三阶非线性光学特性. Z 扫描的结果表明,BTEAADT的乙腈溶液在532 nm具有反饱和吸收效应, 在1064 nm非线性吸收效应可以忽略且在两种波长都有自散焦效应, 三阶非线性折射率为负值. BTEANDT 的乙腈溶液在532 nm 非线性吸收效应可以忽略, 在1064 nm具有饱和吸收效应且在两种波长都有自聚焦效应, 三阶非线性折射率为正值. 分析了造成这种差异的原因. 经过计算得到了两种材料在532 和1064 nm的三阶非线性折射率, 三阶非线性吸收系数, 三阶非线性极化率和超极化率. BETAADT的非线性折射率在532 nm为-1.685×10-18 m2·W-1, 在1064 nm为-1.459×10-18m2·W-1; BTEANDT的非线性折射率在532 nm为1.452×10-18 m2·W-1, 在1064 nm为7.311×10-18 m2·W-1. 两种材料的三阶非线性吸收系数, 三阶非线性极化率和超极化率的数量级分别是10-11 m·W-1, 10-13 esu 和10-31esu. 结果表明这两种材料在非线性光学领域有潜在的应用价值.

关键词: 有机金属配合物, Z扫描技术, 非线性光学性质, 非线性光学材料, 全光开关

Abstract: Two novel 1,3-dithiole-2-thione-4,5-dithiolate compounds, benzyltriethylamine bis(2-thioxo-1,3- dithiole-4,5-dithiolato) aurate(III) (BTEAADT) and benzyltriethylamine bis(2-thioxo-1,3-dithiole-4,5- dithiolato) nickel(III) (BTEANDT), were prepared and their optical nonlinearities in acetonitrile solutions at 532 and 1064 nm were investigated using the Z-scan technique with picosecond laser pulses. The Z-scan curves revealed that BTEAADT exhibited mainly reverse saturable absorption at 532 nm, negligible nonlinear absorption at 1064 nm, and a self-defocusing effect at both wavelengths, which meant that the third-order nonlinear refractive index was negative. BTEANDT exhibited saturable absorption at 1064 nm, negligible nonlinear absorption at 532 nm, and a self-focusing effect at both wavelengths, which meant that the third-order nonlinear refractive index was positive. The reason for these different phenomena was analyzed. The third-order nonlinear refractive index, the third-order nonlinear absorption coefficient, the third-order nonlinear susceptibility, and the hyperpolarizability were obtained at 532 and 1064 nm. The nonlinear refractive indices were -1.685×10-18 m2·W-1 at 532 nm and -1.459×10-18 m2·W-1 at 1064 nm for BTEAADT and 1.452×10-18 m2·W-1 at 532 nm and 7.311×10-18 m2·W-1 at 1064 nm for BETANDT. The magnitudes of the third-order nonlinear absorption coefficient, the third-order nonlinear susceptibility, and the hyperpolarizability were 10-11 m·W-1, 10-13 esu, and 10-31 esu, respectively. All these results suggest that these materials are promising candidates for application in the nonlinear optical area.

Key words: Organometallic coordination compound, Z-scan technique, Nonlinear optical property, Nonlinear optical materials, All-optical switching

MSC2000: 

  • O644