光学仪器
光學儀器
광학의기
Optical Instruments
2015年
4期
348-352
,共5页
偏振态%斯托克斯矢量%气溶胶
偏振態%斯託剋斯矢量%氣溶膠
편진태%사탁극사시량%기용효
polarization state%Stokes vector%aerosol
采用双光路检测配置条件，结合 Mie 氏理论，运用斯托克斯矢量形式，以烟雾模拟特定气溶胶环境，探究偏振光经过不同烟雾环境的传输变化情况。考虑到大气气溶胶成分、质量浓度和颗粒大小以及光源的波长和偏振态等多因素的影响，主要在气溶胶质量浓度和光源配置方面进行研究。实验结果表明，不同烟雾质量浓度时，水平线偏振光的偏振特性基本不改变，右旋偏振光和45°线偏振光退偏程度随烟雾质量浓度的增加而增加，460 nm 和556 nm 波长的偏振光在变化趋势上保持一致。
採用雙光路檢測配置條件，結閤 Mie 氏理論，運用斯託剋斯矢量形式，以煙霧模擬特定氣溶膠環境，探究偏振光經過不同煙霧環境的傳輸變化情況。攷慮到大氣氣溶膠成分、質量濃度和顆粒大小以及光源的波長和偏振態等多因素的影響，主要在氣溶膠質量濃度和光源配置方麵進行研究。實驗結果錶明，不同煙霧質量濃度時，水平線偏振光的偏振特性基本不改變，右鏇偏振光和45°線偏振光退偏程度隨煙霧質量濃度的增加而增加，460 nm 和556 nm 波長的偏振光在變化趨勢上保持一緻。
채용쌍광로검측배치조건，결합 Mie 씨이론，운용사탁극사시량형식，이연무모의특정기용효배경，탐구편진광경과불동연무배경적전수변화정황。고필도대기기용효성분、질량농도화과립대소이급광원적파장화편진태등다인소적영향，주요재기용효질량농도화광원배치방면진행연구。실험결과표명，불동연무질량농도시，수평선편진광적편진특성기본불개변，우선편진광화45°선편진광퇴편정도수연무질량농도적증가이증가，460 nm 화556 nm 파장적편진광재변화추세상보지일치。
This paper used smoke to simulate specific aerosol environment.Based on Mie′s theory and Stokes vector,two-ray-path detector explored the change of the polarization state when the different polarized light passed the smoke.There were many factors including the atmospheric aerosol composition, concentration, particle size and the wavelength and polarization state of light source. Mainly the aerosol concentration and light source configuration were studied and measured. The results show that the different mass concentration of the smoke cannot change the horizontal linear polarization state.Degree of polarization of 45°linear polarized light and circular polarized light decreases with the increase of mass concentration of smoke.The change trend of degree of polarization on 460 nm wavelength is similar with that on 556 nm.
