Project supported by the Doctorial Start-up Fund of Hengyang Normal University, China （Grant No. 09B06）, and the Natural Science Foundation of Hunan Province, China （Grant No. 08jj3001）.
机构署名：
本校为其他机构
院系归属：
物理与电子工程学院
摘要：
The approximate analytical expressions of the apertured broadband beams in the far field with Gaussian and Laguerre - Gaussian spatial modes are presented. For the radially polarized Laguerre - Gaussian beam, the result reveals that the electromagnetic field in the far field is transverse magnetic. The influences of bandwidth (Γ) and truncation parameter (C0) on the transverse intensity distribution of the Gaussian beam and on the energy flux distribution of radially polarized Laguerre - Gaussian beam are analys...
