| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 732915 | Optics & Laser Technology | 2010 | 5 Pages |
Abstract
The properties of a fractional vortex lens are discussed and its focal plane intensity distribution is investigated. The azimuthal phase pattern of a fractional topological charge vortex and the quadratic phase variation of the lens are displayed on a spatial light modulator (SLM) that is used in the phase mode. The intensity distribution possesses a low intensity radial opening in contrast to the doughnut pattern formed by a vortex beam with integer charge. The presence of multiple singularities in the radial opening of the doughnut structure is detected interferometrically.
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Authors
Sunil Vyas, Rakesh Kumar Singh, P. Senthilkumaran,