O437 950317224-戊基-4’-氰基联苯液晶的分子二阶非线性光学极化率=The measurement method of the mole—cular hyperpolarizability for 4—pentyl—4’—cyanodiphenyl liquid crystal[刊,中]/李加,邵喜斌,王敬伯,赵福潭(中科院长...O437 950317224-戊基-4’-氰基联苯液晶的分子二阶非线性光学极化率=The measurement method of the mole—cular hyperpolarizability for 4—pentyl—4’—cyanodiphenyl liquid crystal[刊,中]/李加,邵喜斌,王敬伯,赵福潭(中科院长春物理研究所.吉林,展开更多
A series of novel thermotropic liquid crystalline polyesters bearing nonlinear optical azobenzene side group were synthesized by high temperature solution polycondensation and their structures,thermal stability, phas...A series of novel thermotropic liquid crystalline polyesters bearing nonlinear optical azobenzene side group were synthesized by high temperature solution polycondensation and their structures,thermal stability, phase transition behavior and crystallinity were characterized by IR,elemental analysis, TG-DTA, polarizing optical microscope (POM) equipped with a hot stage and X-ray diffraction techniques. The results demonstrate that all the synthesized polyesters exhibit nematic liquid crystalline phases and show relatively high glass transition temperatures and good thermal stability.展开更多
A series of end-capped triply branched dendritic chromophores have been studied by means of density functional theory calculations. It is found that the second order nonlinear optical properties of the end-capped dend...A series of end-capped triply branched dendritic chromophores have been studied by means of density functional theory calculations. It is found that the second order nonlinear optical properties of the end-capped dendrimers are strongly dependent on the mutual orientations of the three chromophores, numbers of caps and the conjugation length of the ehromophores. Large enhancement of the first hyperpolarizability can be obtained when dipole moments of three branches in the dendrimers are highly parallelized.展开更多
Y2000-62067-415 0014180GaAs/AlAs 超晶格高阶子带的光致发光=Photolumi-nescence from higher=subbands of GaAs/AlAs superlat-tices[会,英]/Domoto,C.& Ohtani,N.//1998 IEEEInternational Conference on Optoelectronic and Mi...Y2000-62067-415 0014180GaAs/AlAs 超晶格高阶子带的光致发光=Photolumi-nescence from higher=subbands of GaAs/AlAs superlat-tices[会,英]/Domoto,C.& Ohtani,N.//1998 IEEEInternational Conference on Optoelectronic and Micro-electronic Materials and Devices.—415~418(EC)Y2000-62270 00141811999年 IEEE 第十三届液体电介质国际会议会议录=1999 IEEE proceedings of 13th internatiorlaI展开更多
文摘O437 950317224-戊基-4’-氰基联苯液晶的分子二阶非线性光学极化率=The measurement method of the mole—cular hyperpolarizability for 4—pentyl—4’—cyanodiphenyl liquid crystal[刊,中]/李加,邵喜斌,王敬伯,赵福潭(中科院长春物理研究所.吉林,
文摘A series of novel thermotropic liquid crystalline polyesters bearing nonlinear optical azobenzene side group were synthesized by high temperature solution polycondensation and their structures,thermal stability, phase transition behavior and crystallinity were characterized by IR,elemental analysis, TG-DTA, polarizing optical microscope (POM) equipped with a hot stage and X-ray diffraction techniques. The results demonstrate that all the synthesized polyesters exhibit nematic liquid crystalline phases and show relatively high glass transition temperatures and good thermal stability.
基金We thank Prof. Yi Luo, Jiirgen Heck, and Hans- Georg Kuball for constructive suggestions. This work was supported by the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry and the Natural Science Foundation of Shandong Province, China (No.Q2008A06).
文摘A series of end-capped triply branched dendritic chromophores have been studied by means of density functional theory calculations. It is found that the second order nonlinear optical properties of the end-capped dendrimers are strongly dependent on the mutual orientations of the three chromophores, numbers of caps and the conjugation length of the ehromophores. Large enhancement of the first hyperpolarizability can be obtained when dipole moments of three branches in the dendrimers are highly parallelized.
文摘Y2000-62067-415 0014180GaAs/AlAs 超晶格高阶子带的光致发光=Photolumi-nescence from higher=subbands of GaAs/AlAs superlat-tices[会,英]/Domoto,C.& Ohtani,N.//1998 IEEEInternational Conference on Optoelectronic and Micro-electronic Materials and Devices.—415~418(EC)Y2000-62270 00141811999年 IEEE 第十三届液体电介质国际会议会议录=1999 IEEE proceedings of 13th internatiorlaI