激光原理与技术课程中自发辐射教学改革

Teaching reform for spontaneous emission in laser principle and technology course

自发辐射是爱因斯坦激光理论中的基本概念之一.激光器是一个自激振荡器,其输出激光来自于泵浦光作用下激光物质的自发辐射信号.将现象-理论-模拟-新现象“四维一体”的教学模式应用于自发辐射概念的教学中,构建抽象概念与具体激光现象之间的桥梁.教学实践表明,该教学模式能有效地提高学生的理解力、创新力及学习兴趣.

Spontaneous emission is one of basic concepts in Einstein′s laser theory.Laser is a self-excited oscillator,which laser output comes from the spontaneous emission of laser matter under pump light.Use the phenomenatheory-stimulation-new phenomena(PTSNP)teaching mode in teaching the concept of spontaneous emission,the bridge between abstract concept and real laser phenomena is built.It demonstrates that the PTSNP teaching mode can improve efficiently students′understanding,innovation,and learning interest.