Adaptive wavefront correction of dynamic multimode beam based on modal decomposition
Abstract
We propose and demonstrate a method for the adaptive wavefront correction of dynamic multimode fiber beams for the first time. The wavefront of incident beam is reconstructed in real-time based on the complete modal information, which obtained by using the modal decomposition of correlation filter method. For the proof of principle, both of the modal decomposition and the wavefront correction are implemented using the same computer-generated hologram, which encoded into a phase-only spatial light modulator. We demonstrate the wavefront correction of dynamic multimode beam at a rate of 5Hz and achieve a 1.73-fold improvement on the average power-in-the-bucket. The experimental results indicate the feasibility of the real-time wavefront correction for the large mode area fiber laser by adaptive optics.
Cite
@article{arxiv.1903.10023,
title = {Adaptive wavefront correction of dynamic multimode beam based on modal decomposition},
author = {Kun Xie and Wenguang Liu and Qiong Zhou and Liangjin Huang and Zongfu Jiang and Fengjie Xi and Xiaojun Xu},
journal= {arXiv preprint arXiv:1903.10023},
year = {2019}
}
Comments
11 pages,7 figures