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700~1100 nm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20 dB以上；尤其当波长在740~840 nm范围内，透过率高达90％以上，消光比达50 dB以上。
We report an optical polarized material and device as a new kind of optical polarizer.The device con-sists 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 po-larization and high optical extinction ratio transmission properties through the glass polarizer.In our calcula-tions,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 840 nm,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.
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