白光干涉_衍射實驗的計算機仿真_藍海江

28 12 實 驗 室 研 究 與 探 索 V o.l 28 No. 12

2009 12 RESEARCH AND EXPLORAT ION IN LABORATORY Dec. 2009

# #

藍海 江1, 2

( 1. , 54500 ;

2. , 6100 1)

: 以日光為白光光源, 把日光光譜均勻分割為若干份色光, 計算出各色光 RGB代碼基于M a-t

lab軟件編寫出白光光柵衍射仿真程序, 通過改變可調(diào)參數(shù)實現(xiàn)白光干涉衍射實驗( 包括: 光柵衍射

單縫及雙縫衍射雙光束及多光束干涉等) 計算機仿真結果表明, 利用 2 000份色光仿真白光干涉

衍射實驗, 圖像色彩細膩而與實際實驗 結果 一致, 并能直接投影于多媒體屏幕上, 可應用于光學計算

機輔助教學及光譜研究等領域

: 物理光學; 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.

K ey

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