Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1541718 | Optics Communications | 2006 | 6 Pages |
Abstract
We report a method for generation of arbitrary shape and array of optical vortices by use of a superposition of coherent elementary vortices based on helical phase spatial filtering in spatial frequency domain. In this method, a helical phase spatial filter (HPSF) is placed in the spatial frequency plane of a 4-f imaging processing system. We demonstrated that the output field distribution represents the convolution between the input field and an elementary vortex field introduced by the HPSF, which results in a special shape or array of optical vortices determined by the “degenerate” properties of coherent elementary vortices and the distribution formats of the input field.
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Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Cheng-Shan Guo, Yan Zhang, Yu-Jing Han, Jian-Ping Ding, Hui-Tian Wang,