银纳米颗粒有序阵列光学偏振玻璃特性研究  

Investigation of optical polarization properties on Ag nanorods array polarizing glass

作　　者：张柯[1] 张桂菊[1,2] 邹快盛[1] 袁孝[1] 

机构地区：[1]苏州大学物理与光电.能源学部江苏省先进光学制造技术重点实验室教育部现代光学技术重点实验室,江苏苏州215006 [2]美国中佛罗里达大学光学与光电子学院,佛罗里达州奥兰多32816

出　　处：《功能材料》2015年第9期9062-9066,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(91023009;61108024);江苏省自然科学基金;高校自然科学资助项目(BK2011278;12KJA480001)

摘　　要：银纳米椭球微粒有序掺杂的光学偏振玻璃具有光学玻璃的高透过率特性和本征的偏振特性,是综合性能好的光学偏振器件.利用米氏理论和电偶极子理论分析了光入射到椭球形银纳米微粒产生的消光特性和偏振机理;建立椭球形纳米微粒周期阵列分布的光学偏振玻璃模型,采用有限元数值算法模拟计算近红外光入射该模型后的偏振光输出特性.通过优化玻璃内部椭球微粒的几何参数,获得波长在700-1100nm近红外全波段内的偏振玻璃的透过率达到80%以上,消光比达20dB以上;尤其当波长在740-840nm 范围内,透过率高达90%以上,消光比达50dB以上.We report an optical polarized material and device as a new kind of optical polarizer.The device consists of periodically distributed ellipsoid silver nanorods inside the transparent Ag-doped glass.Mie scattering theory and dipole theory can be well used to explain the physics interrelationships.The output shows strong polarization and high optical extinction ratio transmission properties through the glass polarizer.In our calculations,the polarization transmission is more than 80% with extinction ration more than 20 dB within the whole infrared wavelength 700-1 100 nm.Especially in a bandwidth of 100 nm from 740 to 840nm,the transmission is over 90% with extinction ratio over 50 dB.This approach is important for new application and detection in laser optics and functional materials.

关 键 词：银椭球纳米颗粒 偏振玻璃 消光比 透过率 

分 类 号：O436.3[机械工程—光学工程]