凸面光栅的衍射效率计算及其二级光谱抑制  

The Convex Grating Diffractive Efficiency Calculating and Second Diffraction Suppression

作　　者：兰卫华[1] 王欣[1] 刘银年[1] 丁学专[1] 王跃明[1] 王建宇[1] 

机构地区：[1]中国科学院上海技术物理研究所,上海200083

出　　处：《红外技术》2009年第5期256-258,共3页Infrared Technology

基　　金：总装备部十五预研课题

摘　　要：对超光谱成像仪使用的凸面光栅衍射效率进行了分析计算。针对常用的两种槽型的凸面光栅,运用傅立叶变换分别推导了相应的衍射效率计算公式,并使用推导的公式计算了凸面光栅的衍射效率。通过计算光栅的二级衍射光谱,对二级光谱对光谱仪分光的干扰进行分析,并提出了相应的抑制措施。Have analyzed and calculated the diffractive efficiency of the convex grating used in the hyper spectral imager. As to two kinds of usually used convex grating, using Fourier transfer method respectively derived the formula for calculating diffractive efficiency, and calculated the efficiency vs. wavelength curve about convex grating diffraction. Through calculating the second diffractive efficiency, analyzed the second diffraction disturbance to the spectrograph and provided the method to suppress the disturbance.

关 键 词：超光谱 凸面光栅 衍射效率 二级衍射 

分 类 号：TN216[电子电信—物理电子学]