摘要
本文基于光栅衍射与机器视觉,设计了一套直观测量物质量子化能量的实验系统,其包括激励待测物发光的“盲盒光源”、光栅衍射组件和读谱系统,系统能以不同方式测定不同物质的能级,并实现了数据的实时处理.盲盒光源利用光致发光或电致发光的基本原理,激发待测物质中的电子从价带跃迁到导带,并发出特定波长的光这一“指纹信号”,利用光栅衍射方法获得其衍射谱,使用数码相机实时采集衍射谱,通过图像处理算法自动获取衍射斑的中心位置,减少了读谱误差,直观、简便地演示了物质能级的量子化.
Based on grating diffraction and machine vision,an experimental system for intuitively measuring quantized energy of matter is designed.It includes a blind box light source that excites luminescence of tested substances,a grating diffraction component,and a spectrum reading system.This novel system can measure energy levels or bands of different substances in different ways and achieve real-time data processing.Blind box light source utilizes the basic principles of photoluminescence or electroluminescence to stimulate electrons in tested substance to transition from valence band to conduction band,and emit the fingerprint signal of light of a specific wavelength.The diffraction spectrum is obtained by classical grating diffraction method.Besides,diffraction spectrum is collected in real time by digital camera,and the center position of diffraction spot is automatically obtained through image processing algorithms to reduce the spectrum reading error.This experimental system intuitively and conveniently demonstrates the quantized energy of matters.
作者
王颖
王智
赵宇琼
罗晓宇
田朝杨
宋佳忆
卢颢
WANG Ying;WANG Zhi;ZHAO Yu-qiong;LUO Xiao-yu;TIAN Zhao-yang;SONG Jia-yi;LU Hao(School of Physical Science and Engineering,Beijing Jiaotong University,Beijing 100044,China)
出处
《大学物理》
2024年第7期41-45,73,共6页
College Physics
基金
国家自然科学基金(U21A6004)资助。
关键词
量子化能量
发光
光栅衍射
图像处理
energy quantization
luminescence
grating diffraction
image processing
