强激光与粒子束2001，Vol.13Issue(3)：267-271,5.
椭圆平顶高斯光束及其传输特性
Elliptical flattened Gaussian beam and it's propagation characteristics
摘要
Abstract
The elliptical flattened Gaussian beam (EFGB) is defined by using tensor method. The propagation formula and corresponding tensor ABCD law of EFGB passing through nonsymmetrical paraxial optical system is derived through vector integration. By using this formula, the propagation characteristics of EFGB through free-space are calculated and discussed. The results show that the propagation property is very different from those of circular flattened Gaussian beam or elliptical Gaussian beam, and is dependent on the order N. In the near field, the intensity distribution remains flat. With the increase of propagation distance, the flattened part degenerates. In the far field, EFGB tends to be elliptical Gaussian beam. Furthermore, beam spots of coupled EFGB rotate with propagation distance z.关键词
椭圆平顶高斯光束/张量ABCD定律/光束传输分类
信息技术与安全科学引用本文复制引用
蔡阳健,林强..椭圆平顶高斯光束及其传输特性[J].强激光与粒子束,2001,13(3):267-271,5.
