布儒斯特角入射的高斯光束传输特性研究  

Study on Propagation Characteristics of Gaussian Beam Incident at Brewster Angle

作　　者：叶俏珏 王先菊 戴占海 Ye Qiaojue;Wang Xianju;Dai Zhanhai(College of Electronics Engineering,College of Artificial Intelligence,South China Agricultural University,Guangzhou,Guangdong 510642,China)

机构地区：[1]华南农业大学电子工程学院,广东广州510642

出　　处：《激光与光电子学进展》2021年第7期316-322,共7页Laser & Optoelectronics Progress

基　　金：广东省省级科技计划(2017B010117010);华南农业大学教改项目(JG200064)。

摘　　要：相比于普通光源,高斯光束具有很好的方向性,而且应用范围十分广泛,采用COMSOL多物理场仿真软件对以布儒斯特角入射的高斯光束的传输特性进行研究。仿真结果表明,s偏振情况下,折射光束为高斯光束,反射光束的方向与折射光束互相垂直;p偏振情况下,折射光束为高斯光束,反射光束不存在,但反射界面的电场模量出现中心强度显著抑制的双瓣剖面,而且出现很弱的双峰反射;在不同的折射率下,折射介质的折射率越大,折射光束的强度集中范围越窄,折射光束的能量越来越低,折射光束与入射光束的电场模量差越小。Compared with ordinary light sources,Gaussian beams have good directivity and have a wide range of applications.COMSOL multiphysics simulation software is used to study the propagation characteristics of Gaussian beams incident at Brewster angle.The simulation results show that under s polarization,the refracted beam is a Gaussian beam,and the direction of the reflected beam is perpendicular to the refracted beam;under p polarization,the refracted beam is a Gaussian beam,and the reflected beam does not exist,but the electric field modulus at the reflection interface shows a double-lobe profile with significantly reduced central intensity and very weak bimodal reflection.Under the different refractive index,the larger the refractive index of the refractive medium,the narrower the intensity concentration range of the refracted beam,the lower the energy,and the smaller the electric field modulus difference between the refracted beam and the incident beam.

关 键 词：光计算 高斯光束 布儒斯特角 反射折射定律 光束特性 

分 类 号：O435[机械工程—光学工程]