基于亚波长矩形孔阵列的偏振实验设计

Design of polarization experiment based on sub-wavelength rectangular aperture array

基于表面等离激元理论的科研成果,设计亚波长金属矩形孔阵列结构的偏振片,在微波段实现了偏振过滤和偏振旋转效应。利用单层金属矩形孔阵列的偏振片验证偏振过滤效应和马吕斯定律;利用双层金属矩形孔阵列的偏振片实现15°、30°、45°、60°、75°和90°的偏振旋转。该实验既可以弥补理工科相关课程中偏振实验的缺乏,又有利于学生了解学科前沿,有助于培养和提高学生的综合科学能力和素质。

Based on the research achievements of the surface plasmon theory, a polarizer with sub-wavelength metal rectangular hole array structure is designed. Polarization filtering and polarization rotation effect are realized in microwave band. Polarization filtering effect and Marius law are verified by using polarizers of single-layer metal rectangular hole array, and the polarization rotations of 15°, 30°, 45°, 60°, 75° and 90° are realized by using polarizers of double-layer metal rectangular hole array. This experiment can not only make up for the lack of polarization experiment in science and engineering related courses, but also help students to understand the frontier of the discipline and help them to train and improve their comprehensive scientific ability and quality.