以多个LED灯珠作为线光源的双棱镜干涉
Biprism Interference with Multiple LED Beads as Line Light Source

在双棱镜干涉实验中使用多个LED灯珠组成的线光源作为光源代替钠光灯，获得了质量优良的干涉条纹，实现了双光束干涉。对双棱镜干涉实验系统进行改进，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。
In the biprism interference experiment, the multiple LED lamp beads is used as the line light source instead of the sodium lamp, and the interference fringes with good quality are obtained, and the double beam interference is realized. With the improvement of the biprism interference experimental system, the obtained system is more simple; the battery-driven LED light source is free from the restriction of the sodium lamp, which makes the equipment compact and portable; The high coherence of the LED light source compared with the sodium lamp makes it very easy to adjust the interferometer and greatly improves the experimental efficiency. The optical wavelength of the light source is measured by the improved biprism interferometer, and satisfactory experimental results are obtained.