Abstract
When a vortex beam with a spiral phase structure passes through dynamic angular double slits (ADS), the interference pattern changes alternatively between destructive and constructive at the angular bisector of the ADS. This change is due to their phase difference. Based on this property, we experimentally demonstrate a simple method to precisely and efficiently determine the topological charge of vortex beams. Furthermore, this scheme allows for the simultaneous determination of the modulus and the sign of the topological charge of the vortex beams.
© 2015 Optical Society of America
Full Article | PDF ArticleMore Like This
Jing Zhu, Pei Zhang, Dongzhi Fu, Dongxu Chen, Ruifeng Liu, Yingnan Zhou, Hong Gao, and Fuli Li
Photon. Res. 4(5) 187-190 (2016)
Yuanyuan Zhao, Xiaoting Huang, Zehong Chang, Xiaoli Wang, and Pei Zhang
Opt. Express 29(21) 32966-32972 (2021)
Jing Zhu, Pei Zhang, Dongxu Chen, Ruifeng Liu, Yingnan Zhou, Jinwen Wang, Hong Gao, and Fuli Li
Appl. Opt. 57(7) B39-B44 (2018)