Chinese Optics Letters, 2017, 15 (3): 030011, Published Online: Jul. 25, 2018   

Highly adjustable helical beam: design and propagation characteristics (Invited Paper) Download: 977次

Author Affiliations
1 State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
2 Photonics Group, Merchant Venturers School of Engineering, University of Bristol, Bristol BS8 1UB, UK
Abstract
Light fields with extraordinary propagation behaviors, such as nondiffracting and self-bending, are useful in the optical delivery of energy, information, and even objects. A kind of helical beam is constructed here based on the caustic method. With the appropriate design, the main lobe of these helical beams can be both well-confined and almost nondiffracting, while moving along a helix with its radius, period, number of rotations, and main lobes highly adjustable. In addition, the peak intensity of the main lobe fluctuates below 15% during propagation. These promising characteristics may enable a variety of potential applications based on these beams.

Yuanhui Wen, Yujie Chen, Yanfeng Zhang, Siyuan Yu. Highly adjustable helical beam: design and propagation characteristics (Invited Paper)[J]. Chinese Optics Letters, 2017, 15(3): 030011.

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