影像科学与光化学 ›› 2007, Vol. 25 ›› Issue (4): 241-248.DOI: 10.7517/j.issn.1674-0475.2007.04.241

• 研究论文 •    下一篇

一种近红外光记录与存储材料——克酮酸染料的三阶非线性光学性质

李忠玉1,2, 徐松3, 黄新1, 张复实1, 笠谷和男4   

  1. 1. 清华大学, 化学系, 有机光电子与分子工程教育部重点实验室, 北京, 100084;
    2. 吉林化工学院, 化学工程系, 吉林, 132022;
    3. 东北电力大学, 应用技术学院, 吉林, 132021;
    4. 山口大学, 工学部, 材料科学与工程系, 日本, 755-8611
  • 收稿日期:2006-10-13 修回日期:2006-12-22 出版日期:2007-07-23 发布日期:2007-07-23
  • 通讯作者: 张复实, Tel:010-62782596.
  • 基金资助:
    国家自然科学基金资助项目(20333080,20572059);博士后科学基金(20060390056).

Third-Order Nonlinear Optical Properties of Croconium Dye for a Kind of Near Infrared Dye Used as Optical Record and Storage Material

LI Zhong-Yu1,2, XU Song3, HUANG Xin1, ZHANG Fu-shi1, Kazuo Kasatani4   

  1. 1. The Key Lab.of Organic Photoelectrons & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, P.R. China;
    2. Department of Chemical Engineering, Jilin Institute of Chemical Technology, Jilin 132022, P.R.China;
    3. Department of Application Technology, Northeast China University of Electric Power Engineering, Jilin 132021, Jilin, P.R.China;
    4. Department of Advanced Materials Science and Engineering, Faculty of Engineering, Yamaguchi University, Tokiwadai, Ube 755-8611, Japan
  • Received:2006-10-13 Revised:2006-12-22 Online:2007-07-23 Published:2007-07-23

摘要: 克酮酸染料是一类新型的近红外吸收染料,由于具有良好的光热稳定性和荧光性能,因而在光记录与存储等领域有着潜在的应用价值.本文利用简并四波混频技术,在近红外区不同吸收波长,在脉宽为130 fs条件下研究了一种吲哚克酮酸染料在溶液和薄膜中的三阶非线性光学性质.该克酮酸染料在773 nm,四氢呋喃溶液中的共振三阶超分子极化率γ为5.3×10-29esu,在薄膜中的共振三阶非线性极化率χ(3)值达到10-8esu数量级.同时,对于三阶非线性光学响应及其动力学机制也进行了研究和探讨.

关键词: 非线性光学, 光记录与存储, 克酮酸染料, 近红外吸收

Abstract: As a new type of near infrared dye,croconium dyes have drawn much attention for their potential applications in the fields of optical record and storage,and nonlinear optical materials because of their thermal and optical stability as well as intense fluorescence.The third-order optical nonlinearities and responses of a croconium dye(1,3-bis[(3,3-dimethylindolin-2-ylidene)methyl] croconine) in tetrahydrofuran(THF) solution and in poly(methyl methacrylate)(PMMA) coating films were measured using a femtosecond degenerate four-wave mixing(DFWM) technique with a laser pulse of 130 fs system under resonant conditions.The molecular hyperpolarizability,γ of the croconium dye in THF solution was determined to be about 5.3×10-29 esu,and the third-order nonlinear optical susceptibilities,χ(3) of the present PMMA coating films containing the croconium dye was measured to be of the order of 10-8 esu.Furthermore,the dynamic of DFWM optical response for croconium dye was also studied and analysed.

Key words: nonlinear optics, optical record and storage, croconium dye, near infrared absorption

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