Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1539781 | Optics Communications | 2009 | 6 Pages |
Abstract
A novel method to produce a flat-topped laser beam by using a double-clad rectangular waveguide laser with high-index inner cladding is presented. The waveguide dispersion equation for cosine mode was deduced, the condition for the flattened mode was given out, relative gains for guided modes were calculated numerically and analyzed. Results indicate that a gain advantage for the flattened mode is clear, a flat-topped laser beam can be achieved when the optical confinement factor, the gain intensity and the output coupler are chosen suitably.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Hongxiang Kang, Haitao Zhang, Ping Yan, Dongsheng Wang, Mali Gong,