摘要
基础知识学习与知识综合应用的脱节一直困扰着大学基础物理教学。由于空气自聚焦效应和等离子体散焦效应共同导致的飞秒激光成丝现象是强激光非线性光学研究的热点话题。为了培养学生的对光学、原子物理学、电子学、数值分析和机械制图等基础知识的综合应用能力,和学生一起设计了创新演示实验去探究飞秒激光成丝过程。采用荧光测量和声音测量两种方法对比研究光丝在不同位置处的演化情况。
The gap between fundamental knowledge learning and their comprehensive application is always a challenge in the undergraduate teaching of basic physics.The phenomenon of femtosecond laser filamentation caused by the combination of air self-focusing and plasma defocusing effects is a hot topic in the study of strong laser nonlinear optics.In order to cultivate students’ability of practical and comprehensive application of basic knowledge(e.g.Optics,Atomic physics,Electronics,Numerical analysis and Mechanical drawing),we design an innovative demonstration experiment to investigate the filamentation of femtosecond laser pulse.With the application of fluorescence and acoustic measurement,the evolution of optical filaments at different locations is studied.
作者
丁晶洁
李梓源
罗恩康
殷龙涛
王景怡
郑悦
刘作业
DING Jingjie;LI Ziyuan;LUO Enkang;YIN Longtao;WANG Jingyi;ZHENG Yue;LIU Zuoye(School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China)
出处
《大学物理实验》
2023年第2期21-25,共5页
Physical Experiment of College
基金
教育部第二批新工科研究与实践项目(E-HJFZQG20202431)
兰州大学教育教学改革研究项目(2020-2081)。
关键词
创新演示实验
飞秒激光成丝
荧光测量
声学测量
innovative demonstration experiment
femtosecond laser filamentation
fluorescence measurement
acoustic measurement
