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中文摘要：
本文对部分相干光束的双缝实验干涉条纹进行了研究。利用转动的毛玻璃以及两个透镜构成了一个简单的产生部分相干光束的光学系统，通过调整毛玻璃与两个透镜的共焦点之间的距离，可以定量地控制光束的相干性。对不同相干性的光束经过双缝干涉之后的光强进行了实验观测，发现光束的相干性会对双缝干涉条纹的衬比度产生影响，光束的相干性越低，条纹衬比度也越小。并对实验结果进行了理论模拟，理论数值模拟的结果与实验观测结果基本一致。
英文摘要：
The interference fringes in double slit experiment of the partially coherent beams are studied. Using rotating ground glass and two lenses consists of a simple optical system with partially coherent beams,between glass and two lens,coherence of the beam can be controlled quantitatively by adjusting the confocal distance between glass and two lens. The intensity of light beams on different coherence characteristics were observed after through the double slit interference,it found that the coherence of the beam can effect the fringe contrast of double slit interference,the coherence of the beam is lower,the smaller the fringe contrast. And the experi-mental results were simulated,the results of theoretical numerical simulation are basically consistent with the experimental observations.
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