摘要
结合成像光谱系统对衍射器件的要求,采用系统优化方法设计了两种衍射器件;给出了光栅的设计结果和光谱响应曲线。性能测试表明,实测结果与设计值相吻合。系统图像采集实验结果表明,在410～700nm范围内,所设计的光栅能满足系统的要求。
A novel computedtomography imaging spectrometer(CTIS) was introduced,in which a diffractive element was specially designed as a key component.The design criteria are as follows:a) The total diffractive efficiency of the measured orders is maximized;b) The diffractive efficiency is not varying highly in irradiance distribution among the measured orders;c) The irradiance variation of each order with wavelength is moderate;d) Scale of the (0,0) order,the (±1,±1) order and (±1,0) or (0,±1) order must minimize the condition number of the system matrix,and the system becomes stable and nonsensitive to the noise;e) The diffractive element is easily fabricated and economic constraint is considered.The results of the testing show the grating can meet the demand of the system.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2003年第2期122-126,共5页
Journal of Optoelectronics·Laser
基金
国家自然科学基金资助项目(69836050
69978007)
关键词
衍射器件
计算层析成像光谱仪
光栅
光谱成像
computer tomograph imaging spectrometer(CTIS)
diffractive element
grating
