摘要
介绍了Sagnac型干涉仪错位量与成像光谱仪极限光谱分辨率的数学关系.在干涉仪胶合过程中,以波长为543 .5 nm的激光器做为单色光源,利用带有十字丝目标的平行光管、标准镜头(焦距为50 .1 mm)、CCD(像元大小为9μm)探测器组成测试系统,来确定两块半五角棱镜胶合时的错位量.利用波长为632 .8 nm的激光器做为单色光源,对整个成像光谱仪的分辨率进行检测,证明采用的干涉仪胶合方法可以保证胶合产生的剪切量满足光谱分辨率的要求.对于影响胶合错位量的因素进行了分析,计算了干涉仪的胶合准确度,得出影响干涉仪胶合错位量的主要因素是读数准确度.
By laser（A= 543. 5 nm）, collimator （with cross objective） and standard len（f= 50. 1 mm） with CCD （pixel size：9 μm） ,the lateral shearing difference between the two five-corner prisms was determined. With another laser （λ=632.8 nm）,the resolving power of the imaging spectro- meter was measured. The method of the agglutination of interferometer was proved effectively by the measurement result. The factors of lateral shearing difference were also analysed. The precision analysis was also given, and the reading error is the main factor which affects the interferometer＇s agglutination precision.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2007年第11期2124-2128,共5页
Acta Photonica Sinica
基金
探月工程资助
