摘要
简要论述了新型偏振风成像干涉仪的原理;分析了偏振风成像干涉仪的各光学部件的偏振化方向对调制度和干涉强度的影响;给出了起偏器的偏振化方向、干涉仪两臂λ/4波片及出射位置处λ/4波片的光轴取向偏离理想方向时干涉仪调制度和干涉强度的理论表达式;采用计算机模拟分别给出了调制度随各偏角变化的曲面图及风速、温度反演误差随各偏角变化的曲线图;给出了温度精度为5K、风速精度为20m/s时偏振化方向的误差容限.该研究对新型偏振风成像干涉仪的研究、研制提供了一定的理论依据和实践指导,对高层大气光学被动探测以及空间探测、对地观测都具有科学意义和应用前景.
The principle of the polarizing atmospheric Michelson interferometer is introduced, the influence of the polarization directions of all the components on its interferential intensity and modulation depth is discussed, and the dependence of intensity and modulation depth on the deviation is calculated with the polarization direction deviating from the ideal direction. We analyze the influence on the intensity and modulation depth when the polarization directions of the polarizer, the three quarter-wave plates and the analyzer deviate from the ideal direction. The changing curves of modulation depth, wind velocity and the temperature with the deviation of the polarization direction are obtained. We also give the tolerances of all the polarization directions. These results would be helpfull for theoretical research and development of the new polarizing atmospheric Michelson interferometer. It also has scientific value and wide prospect for measuring winds in the thermosphere and for space measurement.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2010年第2期989-997,共9页
Acta Physica Sinica
基金
国家自然科学基金重点项目(批准号: 40537031)
国家高技术研究发展计划(批准号:2006AA12Z152)
国防基础科学研究基金(批准号: A1420080187)
国家自然科学基金(批准号: 40875013
40375010
60278019)
陕西省科技攻关计划(批准号:2001K06-G12
2005K04-G18)
西安交通大学"985"二期电子信息平台资助的课题~~
关键词
新型偏振风成像干涉仪
偏振化取向
调制度
干涉强度
polarizing atmospheric Michelson interferometer polarization direction modulation depth interferential intensity
