钴卟啉和铁卟啉的非线性光学特性及拉曼光谱研究

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1、河南大学硕士学位论文钴卟啉和铁卟啉的非线性光学特性及拉曼光谱研究姓名：尹延锋申请学位级别：硕士专业：光学指导教师：莫育俊2003.6.1i可南大学光学专业2000级硕士学位论文描鼗线在焦点密现透过率的最小氆，表明锫#}琳和铰卧啭郡县有菲线性设收特性。、我们还利用归一化透过率啦线算得了两秘金属卟啉的三阶非线性极化率的实部／o，／拉曼光谱属于分子的振劝和转幼光谱，由于其与分子结构有关，所以研究分L，子瓣拉曼光瀵可以褥至4分子结构的壤息。裁嚣增强控曼数越(SERS)豹拉曼信号强度比正常捉曼增加1∥～107倍，幽于SE

2、RS具有很高的灵敏度，能够检测列吸附在金属表覆豹摹势予层亚攀分子层麴分子，又麓给窭表瑟分子懿缀鞫信惑，霞焉、∥被认为是一种很好的表面研究技术0我们对拉曼光谱效应、原理和SERS技术进行／了麓奔。磷究了蘩§}潍释铁卧啭静麓通拉曼港谱(激发线632．8rim)和颈共振拉曼光谱(激发线457．5rim)和以银镜为基底的SERS光谱，弗对这些光谱的主要拉曼峰进行了指认，通过指认迸一步分析了锚日}啉和铁卧啉分子在镦镜基底上的吸附方式。关键谪：钴口}啭铁卟啦非线性折射搴非线性吸收光限幅三阶非线性极化率表面增强拉曼光谱河南大

3、学光学专业2000级硕士学位论文NonlinearOpticalPropertiesandRamanStudyofCo(Ⅱ)-porphyrinandFe(m)一porphyrinAbstractPorphyrinanditsmetaUocompoundnotonlyhavegreatimportancetostudyoflifescience，butalsohavecomprehensiveapplicationstothefieldoftechnique．Meanwhile，theextensiveinte

4、restofspectroscopistsandacademicchemistshavebeenarosedbyIli曲symmetry(closetoD4h)andparticularelctronicstructureofporphyrin．So，inourthesis，thenonlinearopticalpropertiesandRamanspectraofCo(II)-porphyrinandFe(HI)一porphyrinhavebeeninvestigated．Nonlinearopticshav

5、ebeenwidelyappliedandprofuselyresearched,inourarticle，itsmainphenomenaandeffectshavebeensimplysummarized．Theinvestigationofnonlinearopticsnotonlyincludethefoundofnonlinearphenomenaandeffects、thestudyofitsproducemechanismandrules、thedevelopmentofnonlinearopti

6、calnewtechniqueandthefoundofnewmaterial，butalsoincludeapplicationofnonlinearopticaleffectandtechniqueineveryrelatedfield．Thethermalself-defocusingeffectandrcversesaturableabsorptionpropertiesofCo(II)-porphyrinandFe(III)一porphyrin，twokindsofimportantcompounds

7、，havebeentestified．Moreover,Thethermalself-defocusingeffectandreversesaturableabsorptionpropertiesCanleadtoopticallimiting，SOopticallimitingdeviceCanbemade．Thethermalself-defocusingeffectofCo(II)-porphyrinhasbeenmeasuredbyZ-SCantechnique，theresultofexperimen

8、tshowthatthesamplehasreversesaturatedabsorptionpropertyunderthreelaserwaves．It’Swellknownthatboththermalself-defocusingeffectandreversesaturableabsorptionCanleadtoopticallimiting．Co(II)·porphyri