光学演示实验的Monte-Carlo模拟

Simulation of optical demo-experiments by Monte-Carlo method

为了克服光学实验对实验条件要求比较苛刻的缺点 ,加深对光学内容的理解 ,根据惠更斯和菲涅耳原理计算出光向空间某方向传播的几率 ,采用Monte Carlo方法 ,对劈尖、牛顿环的干涉 ,单缝、圆孔和光栅的衍射以及偏振光的检偏过程进行了计算机模拟。每一种实验在主频为5 0 0MHz的计算机上用时 4s左右 ,结果与实物实验相一致。计算机模拟光学演示实验方便、快捷 ,便于调整实验参数 。

We simulated the demo experiments using Monte Carlo method, overcoming the defects of excessive demands for apparatus in real experiment. It includes the following items: light spread rate in some direction according to Huygense Fresnel principle; interference of wedge, newtonian ring; diffraction of a single slit, round hole, and grating; process of checking polarization. Each experiment needs about 4 seconds of CPU time with frequency of 500?MHz. The simulated results are consistent with that in real experiments. It is advantageous in parameter adjustment and convenient for observation.