摘要
为了研究振幅型光栅的衍射效率,运用严格耦合波方法建立立体正弦透射光栅的计算模型。用Matlab软件编程计算衍射效率,并模拟了光栅层附近区域内的光场振幅和相位分布。计算结果表明模型衍射效率与平面的正弦型光栅有差别,其与周期,光栅厚度相关;在一定条件下两者非常接近。
In order to study the diffraction of amplitude gratings,rigorous coupled-wave method was used to establish a calculation model of solid sinusoidal gratings.Calculation of diffraction efficiency was programmed in matlab software,and amplitude and phase distribution around the grating area were also simulated.The results indicated that the solid model was different from planar sinusoidal gratings in diffraction efficiency,which was related to period and thickness of the gratings.The diffraction efficiencys were close in certain conditions.
出处
《激光杂志》
CAS
CSCD
北大核心
2012年第2期22-24,共3页
Laser Journal
基金
江苏省科技厅科技支撑计划项目(BE2009171)
关键词
正弦光栅
衍射效率
严格耦合波方法
计算
sinusoidal gratings
diffraction efficiency
rigousous coupled wave method
calculation
