白光干涉_衍射实验的计算机仿真_蓝海江

28 12 实 验 室 研 究 与 探 索 V o.l 28 No. 12

2009 12 RESEARCH AND EXPLORAT ION IN LABORATORY Dec. 2009

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蓝海 江1, 2

( 1. , 54500 ;

2. , 6100 1)

: 以日光为白光光源, 把日光光谱均匀分割为若干份色光, 计算出各色光 RGB代码基于M a-t

lab软件编写出白光光栅衍射仿真程序, 通过改变可调参数实现白光干涉衍射实验( 包括: 光栅衍射

单缝及双缝衍射双光束及多光束干涉等) 计算机仿真结果表明, 利用 2 000份色光仿真白光干涉

衍射实验, 图像色彩细腻而与实际实验 结果 一致, 并能直接投影于多媒体屏幕上, 可应用于光学计算

机辅助教学及光谱研究等领域

: 物理光学; 白光; 干涉; 衍射; M atlab

: O 4 6. 1; O 4- 9 : A : 1006- 7167( 2009) 12- 0016- 04

Compute r S mi ulat ion ofW hite Light Interference and D iffract ion Expermi ents

1, 2

LAN H a i-j iang

( 1. Department of Physics and Information Science, L iuzhou Teachers College, L iuzhou 54500 , Ch ina;

2. Quantum Optoelectronics Laboratory, Southw est Jiaotong Un iversity, Chengdu 6100 1, Ch ina)

Abs tract: Taking sunlight as wh ite light source, sunlight spectrum is divided into many un iform chromatic lights. The

RGB code values of all chrom atic lights are calcu lated. Based on M atlab, smi ulation program of grating diffraction is

comp lied. By changing adjustable parameters, computer smi ulations of wh ite light interference and diffraction exper-i

ments ( .i e. , grating diffraction, single slit and double-slit diffraction, double-beam andmult-i beam interference exper-i

ments) can be achieved. The results of smi ulations ( by using 2 000 uniform chrom atic lights) show that the colors of

smi ulation p icture are sustainable and consistentw ith the resu lts of actual expermi ents, and the smi ulation pictures can

be connected to the mu ltmi edia screen directly and applied in areas of the optical computer aided instruction and the

spectroscopic study.

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