红外与毫米波学报2017，Vol.36Issue(5)：519-525,7.DOI:10.11972/j.issn.1001-9014.2017.05.002
用于太赫兹空间传输的透镜设计及验证
Lens design and verification used for terahertz space transmission
摘要
Abstract
Terahertz beams are a kind of Gaussian beam with a big divergence angle and its wave front cannot be simplified to a plane or a spherical wave.All the theoretical derivations from the classical electromagnetic theory and ABCD laws support the following conclusions:firstly,a positive lens converges the terahertz beam in front of the focal plane instead of on the focal plane;secondly,a negative lens which matches the radius of the Gaussian beam's wave front is more appropriate for terahertz beam collimation.Experiments show that a negative lens with f'=-188 mm at the matching position,z =100 mm,can improve the terahertz beam collimation from 6° to 0.1°.And 20-m terahertz space transmission was realized with a very simple optical scheme.关键词
太赫兹/透镜/激光/传输Key words
terahertz/lens/lasers/transmission分类
数理科学引用本文复制引用
杨秋杰,何志平,舒嵘..用于太赫兹空间传输的透镜设计及验证[J].红外与毫米波学报,2017,36(5):519-525,7.基金项目
Supported by the National Natural Science Foundation of China (61625505) （61625505）
