CAJ | 학술논문

通过时间分辨率为115fs的超快光克尔方法测量了多金属氧酸盐K8[P2Mo4W13M(H2O)O61](M=Mn,Co,Ni,Cu,Zn)和相应的有机-无机杂多化合物(C19 H25 N2)7 K3[P2 Mo4 W13 MO62]在830 nm处的三阶非线性光学性质.多金属氧酸盐阴离子和相应的杂多化合物都表现出很大的三阶非线性,其中M=Cu的取代物的非线性系数要比其他小一个数量级.通过比较有机-无机杂多化合物和生成前者的反应物的γ值,发现杂多化合物中的电荷转移效应极大的增强了三阶非线性光学性能.
통과시간분변솔위115fs적초쾌광극이방법측량료다금속양산염K8[P2Mo4W13M(H2O)O61](M=Mn,Co,Ni,Cu,Zn)화상응적유궤-무궤잡다화합물(C19 H25 N2)7 K3[P2 Mo4 W13 MO62]재830 nm처적삼계비선성광학성질.다금속양산염음리자화상응적잡다화합물도표현출흔대적삼계비선성,기중M=Cu적취대물적비선성계수요비기타소일개수량급.통과비교유궤-무궤잡다화합물화생성전자적반응물적γ치,발현잡다화합물중적전하전이효응겁대적증강료삼계비선성광학성능.
Thethird-order optical nonlinearities of the polyoxometalates of K8 [P2 Mo4 W13 M (H2 O) O61 ](M =Mn,Co,N i,Cu,Zn) and their organic-inorganic hybrid compounds of (C19H25N2)7 K3 [P2 Mo4 W13MO62]were measured by using ultrafast optical Kerr effect at 830nm wavelength,with time resolution of 115fs.Both of the polyoxometalate anions and the heteropoly compounds exhibited large third-order optical nonlinearity except the copper substituted one,which is one order of magnitude smaller than the others.By comparing the γ values of the organic-inorganic hybrid compounds and that of their reactants,it is concluded that the charge-transfer remarkably enhanced the third-order optical nonlinearities of the hybrid compounds.