摘要
基于浸入式光栅与普通光栅的特性差异,推导了浸入式光栅的光栅方程,研究了浸入式介质吸收对单缝衍射和多光束干涉强度分布的影响,得到经修正的单缝衍射因子和多光束干涉因子,推导出存在介质吸收情况下的光强分布公式.分析结果表明:该公式更具有普适性,单缝衍射强度分布公式、多缝衍射强度分布公式以及平行平板多光束干涉强度分布公式均为该修正公式的特殊情况.
Based on the difference between nomal grating and immersion grating,the immersion grating equation was deduced.Immersion medium absorption was studied as the reason of the single slit diffraction and the change of the multiple beam interference intensity distribution.The correction factors of single slit diffraction and multiple beam interference were concluded,and the intensity distribution formula considering the medium absorption was deduced.The formula is more general and the single slit diffraction intensity distribution formula,the multi-slit diffraction intensity distribution formula and the parallel-plate multiple beam interference intensity distribution formula are special cases of the correction formula.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2014年第11期121-127,共7页
Acta Photonica Sinica
基金
国家自然科学基金(No.61178033)资助
关键词
光学设计
光谱仪
理论分析
浸入式光栅
光栅方程
介质吸收
光强分布
Optical design
Spectrometer
Theoretical analysis
Immersion grating
Grating equation
Medium absorption
Intensity distribution
