基于MATLAB的光栅衍射实验仿真与研究

Emulation and research of experiments of diffractive gratings based on MATLAB

利用惠更斯—菲涅耳原理,获得了衍射光栅光强的解析表达式,运用Matlab软件,从λ,N,b,d,f,θ0等6个层面对衍射光栅的光强分布和谱线特征进行了数值模拟,模拟结果与实验观测的结果非常吻合.这种方法作为辅助教学手段,有助于学生更加深刻地理解光栅衍射的特征和规律,提高教学质量.

Using the Huygens-Fresnel Principle,an explicit expression of optical strength of diffractive grating is derived.Based on Matlab sorftware,the distribution of optical strength of diffractive gratings and characteristic of chartline is simulated from the six fields such as λ,N,b,d,f,θ 0.The results are consistent with the experimental results.As an auxiliary teaching means,it helps to profoundly understand the diffraction phenomenon and characteristics.