Bi_2S_3纳米晶掺杂钠硼硅玻璃的三阶非线性光学性质  

Third-order Nonlinear Optical Properties of Bi_2S_3 Nanocrystals Embedded in Sodium Borosilicate Glass

作　　者：杨昕宇[1,2] 向卫东[1,2] 赵海军[2] 张希艳[1] 梁晓娟[2] 刘海涛[2] 

机构地区：[1]长春理工大学材料科学与工程学院,长春130022 [2]温州大学化学与材料工程学院,温州325035

出　　处：《无机材料学报》2011年第3期290-294,共5页Journal of Inorganic Materials

基　　金：国家自然科学基金(50772075;50972107);浙江省自然科学基金(Y4100233);浙江省教育厅项目(Y200804258);浙江省科技创新团队项目(2009R50010)~~

摘　　要：利用溶胶-凝胶方法制备了1 wt%Bi2S3纳米晶掺杂钠硼硅玻璃.利用X射线粉末衍射仪(XRD),X射线光电子能谱(XPS),透射电子显微镜(TEM),X射线能量色散谱(EDX),扫描模式透射电子显微镜(STEM)以及高分辨透射电子显微镜(HRTEM)对Bi2S3纳米晶在钠硼硅玻璃中的形貌和微结构进行了表征,同时,利用飞秒Z扫描技术在波长为770 nm对该玻璃的三阶非线性光学性能进行了分析测试.结果表明,尺寸为10～30 nm的Bi2S3正交晶系纳米晶在钠硼硅玻璃中形成,该玻璃的三阶非线性光学折射率γ、三阶非线性吸收率β和三阶非线性极化率χ(3)分别为5.90×10-16 m2/W、7.35×10-9 m/W和4.55×10-18 m2/V2.其中,该玻璃的三阶非线性极化率值比未经掺杂的钠硼硅玻璃(χ(3)=1.09×10-22 m2/V2)高出4个数量级,这表明,随着Bi2S3纳米晶的引入,该玻璃的三阶非线性光学性能将得到显著的提高.Bi2S3 nanocrystals（1wt%） embedded in sodium borosilicate glass were synthesized through Sol-Gel process.The morphology and microstructure of Bi2S3 nanocrystals in sodium borosilicate glass were characterized by means of X-ray powder diffraction（XRD）,X-ray photoelectron spectroscope（XPS）,transmission electron microscope（TEM）,energy dispersion X-ray spectra（EDX）,scanning transmission electron microscope（STEM） and high-resolutions TEM（HRTEM）.Furthermore,the third-order nonlinear optical properties of the glass were measured by femtosecond Z-scan technique at a wavelength of 770 nm.The results show that the size of Bi2S3 nanocrystals in sodium borosilicate glass usually ranges from 10 to 30 nm,and the Bi2S3 nanocrystals are determined to be of the orthorhombic phase.The third-order nonlinear optical refractive index γ,absorption coefficient β and susceptibility χ（3） of the glass are determined to be 5.90×10 16 m2/W,7.35×10 9 m/W and 4.55×10 18 m2/V2,respectively.Thereinto,the third-order optical nonlinear susceptibility χ（3） of the glass is four orders of magnitude greater than un-doped glass（χ（3）= 1.09×10 22 m2/V2）.It is clear that the third-order nonlinear optical properties of the glass will be improved greatly with an increase of the Bi2S3 content.

关 键 词：Bi2S3纳米晶 钠硼硅玻璃 溶胶-凝胶 三阶光学非线性性质 

分 类 号：TQ174[化学工程—陶瓷工业]