发明授权
- 专利标题: Polar self-assembled thin films for non-linear optical materials
- 专利标题(中): 用于非线性光学材料的极性自组装薄膜
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申请号: US844718申请日: 1997-04-18
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公开(公告)号: US6033773A公开(公告)日: 2000-03-07
- 发明人: XiaoGuang Yang , Basil I. Swanson , DeQuan Li
- 申请人: XiaoGuang Yang , Basil I. Swanson , DeQuan Li
- 申请人地址: NM Los Alamos
- 专利权人: The Regents of the University of California
- 当前专利权人: The Regents of the University of California
- 当前专利权人地址: NM Los Alamos
- 主分类号: G02F1/361
- IPC分类号: G02F1/361 ; G02F1/35 ; G02F2/02
摘要:
The design and synthesis of a family of calix[4]arene-based nonlinear optical (NLO) chromophores are discussed. The calixarene chromophores are macrocyclic compounds consisting of four simple D-.pi.-A units bridged by methylene groups. These molecules were synthesized such that four D-.pi.-A units of the calix[4]arene were aligned along the same direction with the calixarene in a cone conformation. These nonlinear optical super-chromophores were subsequently fabricated into covalently bound self-assembled monolayers on the surfaces of fused silica and silicon. Spectroscopic second harmonic generation (SHG) measurements were carried out to determine the absolute value of the dominant element of the second-order nonlinear susceptibility, d.sub.33, and the average molecular alignment, .PSI.. A value of d.sub.33 =60 pm/V at a fundamental wavelength of 890 nm, and .PSI..about.36.degree. was found with respect to the surface normal.
公开/授权文献
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