Lightwave manipulation by organic nonlinear optical materials

由于当前的通信系统正变得更加强大和复杂，光学技术有望显著地为电子信息处理网络的未来做出贡献。本研究的目标是开发光操纵装置，如频率操纵装置、相位和强度操纵装置以及波前端操纵装置。在本项目中，二阶NLO材料的广泛变体、光纤材料、光纤纤维和聚合物光学纤维，以及由开发的手性组组成的新颖材料。有机离子盐具有较大的光学非线性，相对较低的切割长度。Nano particles of organic cr\are prepared with negative charge and档D1（3）·高效相位和强度操纵装置是由晶体核心纤维制备的。在一个新的光学调制器的基础上，chiral nonlinearity正在开发。Very stable NLO polymers consisting of？-helix polypeptide were synthesized and a sub-？ron存储器D1 grating structure was fabricated by self-assembly technique to achieve high conversion efficiency and high bandwidth modulation。我们拥有多功能性chromophores which enables us to obtain "monolithic photorefractive materials" The efficient photorefractive efficient photorefractive effManagement allow us to demonstrate imagereconstruction and optical associative memory。光学空间调制器是通过使用聚合物光子晶体制造的，这种空间调制和响应时间的敏感性通过与空穴结构耦合的方式得到了改善超过10次。

As current communication systems are becoming more powerful and complex, optical technology is expected to contribute significantly to the future electronic information processing network. The objective of this research is to develop light manipulation devices such as frequency manipulation device, phase and intensity manipulation device and wavefront manipulation device.In this project, wide variety of second-order NLO materials, photorefractive materials, optical waveguide and polymer optical fibers, and novel materials consisting of chiral group were developed. Organic ionic salts possess large optical nonlinearity with relatively low cut off wavelength. Nano particles of organic crystal are prepared with negative charge and χィイD1(3)ィエD1 of nanocrystals found to be 10ィイD1-7ィエD1 esu. Efficient phase and intensity manipulation device were prepared by crystal cored fiber. In addition novel optical modulators based on chiral nonlinearity were developed. The very stable NLO polymers consisting of α-helix polypeptide were synthesized and a sub-micron χィイD1(2)ィエD1 grating structure was fabricated by self-assembly technique to achieve high conversion efficiency and high bandwidth modulation.We have developed multifunctional chromophores which enables us to obtain "monolithic photorefractive materials" The efficient photorefractive effects allow us to demonstrate imagereconstruction and optical associative memory. Optical space modulator was fabricated by using poled polymer photonic crystal.The sensitivity of this space modulation and response time were improved more than 10 times by coupling with cavity structure.