Abstract
This paper experimentally investigates the controlling of a focal field of azimuthally polarized (AP) Gaussian beams with multi-azimuthal masks. Based on the angular diffraction theory, an explicit model is established to describe the intensity and polarization distributions of the focal fields. It reveals that the focal fields of the modulated AP beams are closely related to the mask structure. By designing the parameters of the mask structure, we could consciously manage the intensity and polarization distributions of the focal fields of an AP Gaussian beam. Our experimental results also demonstrate the feasibility of controlling focal field characteristics by engineering the mask structure, and suggest an effective approach for manipulating the focal field of vector beams.
© 2015 Optical Society of America
Full Article | PDF ArticleMore Like This
Peng Li, Sheng Liu, Gaofeng Xie, Tao Peng, and Jianlin Zhao
Opt. Express 23(6) 7131-7139 (2015)
Yi Zhang, Peng Li, Sheng Liu, Lei Han, Huachao Cheng, and Jianlin Zhao
Opt. Express 24(25) 28409-28418 (2016)
Wei Zhang, Sheng Liu, Peng Li, Xiangyang Jiao, and Jianlin Zhao
Opt. Express 21(1) 974-983 (2013)