点击次数：

所属单位：机电学院

发表刊物：MEASUREMENT & CONTROL

关键字：Electromagnetic effect electromagnetic cavity low-power laser beam deflection beam bunching

摘要：The bunching and deflection characteristics of low-power laser beam were investigated under electromagnetic field. On the basis of the Faraday effect, the cylindrical electromagnetic cavity was designed and implemented in the experiments. Several types of the magneto-optical elements were placed in the electromagnetic cavity individually. In the test of the deflection characteristics of low-power laser, the rotating angle, the polarization plane of linearly polarized light which passed through electromagnetic cavity, was measured by polarization extinction. We focus on the relation between the coil current and the rotating angle. The experimental data show that when the coil current varies in the range of 0-5 A, the rotating angles changed from 0 degrees to 24.1 degrees. Then, a fitting formula about the coil current and the rotating angle was obtained from the experimental data using the least square algorithm. The analysis shows that the rotating angle is proportional to the excitation current and the correlation coefficient is more than 0.9995. In order to study the beam bunching characteristics of low-power laser, the area of the laser facula was measured after the low-power laser passed through the electromagnetic cavity. The experiment data show that the laser facula area changes in a small range and the experimental data meet 3 sigma criteria.

ISSN号：0020-2940

是否译文：否

发表时间：2019-06-01

合写作者：Zhang, Chi,Li, Jing,李井华,Wang, Rui,王睿

通讯作者：陆永华