Highly efficient and precise laser processing by fiber laser with controlled spatial polarization

我们实现了偏振分布不均匀的激光的产生和放大。特别是利用光纤实现了高质量的径向和方位偏振种子光束的产生和放大。利用双折射激光材料，成功地获得了高功率、高质量的径向和方位偏振光束。此外，由于抑制了热效应，薄圆盘和偏振选择反射镜的性能得到了改善。还获得了高阶横模激光光束。

We performed the generation and amplification of laser beams with inhomogeneous polarization distribution. Especially, high quality seed beams with radial and azimuthal polarizations were generated and amplified by using an optical fiber. High power and high quality beams with radial and azimuthal polarizations were successfully achieved by using a birefringent laser material. Furthermore, the performance was improved by a thin disk and polarization selective mirrors as a result of suppression of thermal effects. Higher order transverse mode laser beams were also obtained.