摘要
Depending on cavity configuration, a c-cut Nd:YVO4 laser by using a large-apex-angle axicon can execute azimuthally and radially polarized operations. A large-apex-angle axicon dominates and stabilizes the generation of the pattern, and expands the difference between the ordinary and extraordinary rays to generate off-axis cylindrical vector beams. When the cavity length is properly adjusted, the polarization of offaxis laser beams can exhibit a transition from azimuthal to radial polarization. The degree of polarizations can be up to 95.4% ± 2.6% and 94% ± 3.7% for azimuthally and radially polarized beams, respectively; and the slope efficiencies are approximately 20.5% for both polarized operations. Using two-pass-mode ray tracing, the ray generating mechanisms and divergent angles of their patterns were analyzed.
原文 | English |
---|---|
頁(從 - 到) | 16035-16042 |
頁數 | 8 |
期刊 | Optics Express |
卷 | 21 |
發行號 | 13 |
DOIs | |
出版狀態 | Published - 2013 7月 1 |
All Science Journal Classification (ASJC) codes
- 原子與分子物理與光學