| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1540786 | Optics Communications | 2009 | 6 Pages |
Abstract
Focusing a radially polarized annular Gaussian beam with a gradient Mikaelian’s microlens is simulated using a radial version of the FDTD method (finite-difference time domain), in which Maxwell’s equations in the cylindrical coordinates are solved in the MATLAB 7.0 environment. We show that the focal spot size (the area with larger-than half-maximum intensity) can be made as small as 0.126λ2, with focal spot diameter being 0.40λ.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
V.V. Kotlyar, S.S. Stafeev,