Ne原子无多普勒光谱测量虚拟仿真实验的梯度型设计

Virtual simulation experiment of Ne atom Doppler-free spectrum

在“超快光场与物质相互作用”虚拟仿真实验平台,基于学生认知规律设计了实现Ne原子无多普勒展宽光谱测量的6个梯度型实验,包含2个多普勒展宽的荧光光谱与激发光谱,无多普勒腔外强度饱和吸收光谱与强度内调制光谱,无多普勒偏振光谱与偏振内调制光谱.该系列实验已经应用于《光谱测量技术》理论课教学中,学生通过虚拟仿真实验的操作,对多普勒展宽的产生机制、兰姆凹陷、原子饱和吸收、原子偏振选择吸收等基本概念的理解更加深刻,对于为消除多普勒展宽而进行的实验设计思想领悟得更加透彻,同时掌握了锁相放大灵敏探测技术使用方法与适用范围.

Based on the virtual simulation experiment platform,the super fast light field and matter interaction was designed.Six gradients of experiments were designed to realize the measurement of Ne atom Doppler-free spectrum according to students’cognitive gradients,including two Doppler broadening absorption and excitation spectra,Doppler-free out cavity intensity saturation absorption spectrum and intensity internal modulation spectrum,Doppler-free polarization spectrum and polarization internal modulation spectrum.These series of experiments had been carried out in the teaching of spectrum measurement technology.Through the virtual simulation experiment,students got a deeper understanding of the mechanism of Doppler broadening,lamb depression,atomic saturation absorption,atomic polarization selective absorption and other basic concepts and the experimental design idea to eliminate Doppler broadening.The application method and application scope of lock-in amplification sensitive detection technology were also grasped.