基于LabVIEW的平面透射光栅虚拟仿真实验开发

Virtual Simulation of Plane Transmission Grating Based on LabVIEW

针对光栅衍射实验教学要求,开发出一套基于LabVIEW的平面光栅虚拟仿真实验系统.通过调节缝宽和光栅常数等参量,在系统界面中能直观地观察到波长、光强和衍射条纹之间的对应变化关系,有助于研究光栅衍射规律;通过对比夫琅禾费单缝衍射、多光束干涉以及光栅衍射的实验现象,有助于理解干涉和衍射的区别与联系.该实验系统界面简洁,交互性强,功能丰富.通过在实验教学过程中引入该仿真实验系统,能够有效激发学生的主观能动性,有助于提升学习效果.

In order to meet the requirements of grating diffraction experiment teaching,a plane grating virtual simulation experiment system based on LabVIEW has been developed.By adjusting the peak width and grating constant,it can be visually observed the relationship of light intensity,wavelength with the diffraction pattern in the system interface,which will help to study the law of grating diffraction phenomenon.In addition,by comparing the Fraunhofer single slit diffraction,multiple beam interference and grating diffraction experiment together,it will help to understand the difference and connection between the interference and diffraction.The system has simple interface,strong interactivity and rich functions.Through the introduction of the simulation experiment system in the experimental teaching process,it can effectively stimulate the students′subjective initiative,and help to improve the learning effect.