| 基于光束的相干特性拓展双缝实验教学实验内容 |
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| 引用本文： | 陈子阳,;蒲继雄.基于光束的相干特性拓展双缝实验教学实验内容[J].大学物理实验,2014(4):16-18. |
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| 作者姓名： | 陈子阳 ;蒲继雄 |
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| 作者单位： | [1]华侨大学,福建厦门361021; [2]福建省光传输与变换重点实验室,福建厦门361021 |
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| 基金项目： | 国家自然科学基金（61178015;11304104） |
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| 摘 要： | 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。
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| 关 键 词： | 双缝干涉实验 部分相干光 条纹衬比度 |
Development Teaching Content of Double Slit Experiment Based on Coherence Characteristics of Light Beam |
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| Institution: | CHEN Zi-yang,PU Ji-xiong ( 1. Huaqiao University, Fujian Xiamen 361021 ; 2. Key Laboratory of Optical Transmission and Transformation in Fujian Province, Fujian Xiamen 361021 ) |
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| Abstract: | 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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| Keywords: | double-slit interference experiment partially coherent light fringe contrast |
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