利用LED光源进行双棱镜干涉测光波波长

The LED Light Source was Used to Measure the Wavelength of Double Prism Interference

利用LED光源代替传统双棱镜干涉仪中的钠光灯,实现了双光束干涉,获得了质量优良的干涉条纹。通过对双棱镜干涉仪的改良,获得的系统更加简单;电池驱动的LED光源脱离了钠光灯使用市电的约束,使设备紧凑便携;LED光源相对于钠光灯的高相干性,使得干涉仪调整非常容易,大大提高了实验效率。利用改进后的双棱镜干涉仪测量了光源的光波长,获得了满意的实验结果。

The LED light source is used to replace the sodium light lamp in the traditional double prism interferometer to achieve double beam interference and obtain interference fringes with excellent quality.Through the improvement of the double prism interferometer,the obtained system is simpler;the battery-driven LED light source is free from the constraints of the sodium lamp on the use of commercial power,making the device compact and portable;The high coherence of LED light source compared with sodium light makes it easy to adjust interferometer,which greatly improves the experimental efficiency.Using the improved double prism interferometer,the light wavelength of the light source was measured,and satisfactory experimental results were obtained.