摘要
We proposed an aperiodic laser beam distribution, in which the laser beams are placed along a Fermat spiral, to suppress the sidelobe power in the coherent beam combining. Owing to the changed distances between two consecutive beams, the conditions of the sidelobe suppression are naturally satisfied. The Fermat spiral array was demonstrated to achieve a better sidelobe suppression than the periodic arrays, and the effects of various factors on the sidelobe suppression were analyzed numerically. Experiments were carried out to verify the sidelobe suppression by different Fermat spiral arrays, and the results matched well with the simulations.
作者
高旸
廖家莉
徐军
周战荣
Yang Gao;Jiali Liao;Jun Xu;Zhanrong Zhou(Xi’an Research Institute of High Technology,Xi’an 710025,China;School of Physics and Optoelectronic Engineering,Xidian University,Xi’an 710071,China;State Key Laboratory of Pulsed Power Laser Technology,Hefei 230037,China)
基金
This work was supported by the National Natural Science Foundation of China(Nos.62005207 and 61701505)
the Open Research Fund of State Key Laboratory of Pulsed Power Laser Technology(No.SKL2019KF06)
the Natural Science Foundation of Shaanxi Province(Nos.2019JQ-648 and 2018JQ-6080)。
