摘要
杨氏双缝干涉是光学和大学物理等课程的重要内容,其基本原理在工程技术中有着广泛的应用。本文运用Matlab编写程序,对杨氏双缝干涉实验进行仿真,仿真结果直观地展现出波长、缝间距和缝屏距离等参数对双缝干涉的影响。此外,本文着重模拟白光作为光源的杨氏双缝干涉实验,展示了干涉后色散的彩色光谱,并借助光强变化曲线分析光谱中光强和对比度变化的原因。本文还进一步对比了以单色光和白光分别作为光源时,利用杨氏双缝干涉测定透明介质薄膜折射率的仿真实验结果,借此验证了单色光源在该实验中的局限性。本文的仿真实验不但能加深学生对光的干涉规律的理解,而且对丰富杨氏双缝干涉的教学内容、培养学生的科学探究素养、提升其利用信息技术分析和解决问题的能力有着重要意义。
Young’s double-slit interference(YDSI)is an important content in the courses like Optics,College Physics,and its basic principle is widely used in engineering technology.In this paper,YDSI experiment was simulated by programming with MATLAB,and the simulation results straightforwardly show the effects of the slit spacing,the distance between the slit and the receiving screen and the light wavelength on the YDSI.Particularly,we simulated the YDSI experiment with the white light as a light source,based on which we showed the color spectrum of dispersion induced by the interference,and the mechanism for the change of light intensity and spectral contrast.In addition,we further compared the simulation results of measuring the refractive index of transparent dielectric films when using,separately,monochromatic and white light as light sources,demonstrating the limitation of a monochromatic light source in the experiment.The simulation experiment performed in this work is of great significance not only for deepening students’understanding on the light interference,but also for enriching the teaching content of YDSI,and cultivating students’scientific exploration literacy and improving their ability to analyze and solve problems using information technology.
作者
王烨
王岩
张志峰
冯学超
WANG Ye;WANG Yan;ZHANG Zhifeng;FENG Xuechao(School of Electronics and Information,Zhengzhou University of Light Industry,Zhengzhou,Henan 450001)
出处
《大学物理实验》
2024年第6期99-104,共6页
Physical Experiment of College
基金
河南省高等教育教学改革研究与实践重大项目(2024SJGLX0020)
河南省高等教育教学改革研究与实践一般项目(2024SJGLX1095)
2023年度河南省本科高校研究性教学系列项目
2023年度河南省本科高校产教融合研究项目
2024年教育部产学合作协同育人项目(231105078104156)。
关键词
杨氏双缝干涉
白光光源
MATLAB仿真
折射率
Young’s double-slit interference
white light source
Matlab simulation
refractive index
