通过幅度和相位的联合补偿来改善光束质量。

Beam quality improvement by joint compensation of amplitude and phase.

机构信息

State Key Laboratory of Tribology, Center for Photonics and Electronics, Department of Precision Instruments, Tsinghua University, Beijing, China.

出版信息

Opt Lett. 2013 Apr 1;38(7):1101-3. doi: 10.1364/OL.38.001101.

DOI:10.1364/OL.38.001101

PMID:23546257

Abstract

The M² factor could be decomposed as amplitude term and phase term. A method to improve the beam quality of laser beams is proposed. In our method, the amplitude and phase of a laser beam are both compensated in order to improve the beam quality completely. In experiment, a laser amplifier is set to modulate the amplitude to Gaussian type, and a deformable mirror is used to compensate the phase aberration. The laser beam is well compensated by our method; the beam quality factor of the laser is improved from 1.7 to 1.1.

摘要

M² 因子可以分解为振幅项和相位项。提出了一种提高激光光束质量的方法。在我们的方法中，为了完全提高光束质量，对激光光束的振幅和相位都进行了补偿。在实验中，设置了一台激光放大器来调制振幅至高斯型，并用变形镜补偿相位像差。我们的方法对激光光束进行了很好的补偿；激光的光束质量因子从 1.7 提高到了 1.1。