共查询到13条相似文献,搜索用时 62 毫秒
1.
测量了RbTiOAsO4(RTA)晶体的电光系数、介电常数和交流电导率,结果为:电光系数γ13=10.8,γ23=17.3,γ33=40.0,γ51=12.3,γ42=14.6pm/V;介电常数ε11=ε22=12,ε33=21;交流电导率σc=3.6×10-8s/cm。结果表明RTA晶体波导调制器的品质因子n7γ2/ε比KTP晶体高15%,但是其交流电导率比KTP晶体小了两个数量级。这些性能使RTA晶体有希望应用于波导调制器和其它电光器件。 相似文献
2.
Zinc cadmium thiocyanate(ZCTC),ZnCd(SCN)4, has been discovered as a UV second-order nonlinear optical coorination crystal.Its thermal and transmission properties are reported.The thermal decomposition is characterized by using the X-ray powder diffraction (XRPD) and infared (IR) spectroscopy at roon temperature.The absorptions of intrinsic ions and ZCTC in a solution state are discussed as well as transmission properties of the ZCTC crystal.An effective method of reducing the surface reflection loss of ZCTC crystal is introduced. 相似文献
3.
4.
干涉法测量Zn(SCN)_2·2H_2O晶体的压电系数和电光系数 总被引:1,自引:0,他引:1
用干涉法首次测量了Zn(SCN)_2·2H_2O晶体的全部压电系数和电光系数。结果为:d_(14)=-8.8,d_(25)=-15.8,d_(36)=1.2(×10~(-12)C/N);γ41=4.5,γ52=6.4,γ63=0.8(×10~(-12)m/V)。 相似文献
5.
6.
7.
在水和乙二醇-甲醚体积比为1∶的混合溶液中制备了金属有机配合物非线性光学晶体材料;乙二醇-甲醚合硫氰酸汞锰(MMTG)晶体。该晶体具有较强的粉末倍频(SHG)效应,用半定量法测定其SHG强度与Urea晶体相当。该晶体具有较强的红外活性,用红外光谱表征了原子间的振动形式和配位情况。用X射线粉末衍射得到了其粉末衍射数据,对衍射数据进行了指标化,并得出MMTG属于正交晶系,其点阵参数a=1.6219800nm,b1.3502840nm,c=0.7295630nm,V=1.59784nm^2。利用指标化结果和X-射线衍射法(XRD)研究了单晶体生长面的取向。用SEM表征了其形貌。最后用X-射线四周衍射法所得的该晶体的结构数据与粉末衍射数据对比,结果符合较好。并最终确定了MMTG的空间群为p21/c。 相似文献
8.
9.
10.
The crystallographic properties and Raman spectra of the title compound ZnCd (SCN)4,which is a new nonlinear optical crystal (NLO),are reported for the first time,This crystal is orthorhombic and its space group is I4^4 with unit cell parameters a=1.135(0.2) nm c=0.43760(1) nm.There are two formulas per unit cell.Raman spectra of zinc cadmium thiocyanatec (ZCTC) are given and the electron activities in the crystal are shown. 相似文献
11.
用干涉法测量了低对称晶体 Gd Ca4 O(BO3) 3的全部电光系数。为了分离测量交叉电光系数 γ51 ,γ53,γ4 2和γ6 2 ,采用了新的样品趋向。测量结果为 :γ1 1 =0 .4 pm / V ,γ2 1 =0 .5 pm/ V,γ31 =0 .6 pm / V,γ1 3=0 .1pm/ V,γ2 3=0 .4 pm / V,γ33=2 .0 pm/ V,γ51 =0 .7pm / V ,γ53=1.5 pm / V,γ4 2 =0 .5 pm/ V,γ6 2 =0 .8pm / V . 相似文献
12.