Li Sensen, Wang Yulei, Lu Zhiwei, Ding Lei, Du Pengyuan, Chen Yi, Zheng Zhenxing, Ba Dexin, Dong Yongkang, Yuan Hang, Bai Zhenxu, Liu Zhaohong, Cui Can
Opt Express. 2015 Jan 26;23(2):681-9. doi: 10.1364/OE.23.000681.
We demonstrate a high-power laser system with a high-quality near-field beam by using a liquid-crystal spatial light modulator (SLM). An efficient spatial beam shaping algorithm is discussed which can improve the output nearfield beam quality effectively. Both small-signal and large-signal amplification situation of the laser are considered in the beam shaping algorithm. The experimental results show that the near field fluence modulation of output is improved from 1.99:1 to 1.26:1 by using the liquid-crystal SLM. Obvious uniform spatial fluence distribution and near-field beam quality improvement are observed.
我们通过使用液晶空间光调制器（SLM）展示了一种具有高质量近场光束的高功率激光系统。讨论了一种有效的空间光束整形算法，该算法可以有效提高输出近场光束质量。在光束整形算法中考虑了激光的小信号和大信号放大情况。实验结果表明，使用液晶空间光调制器后，输出的近场注量调制从1.99:1提高到了1.26:1。观察到明显均匀的空间注量分布和近场光束质量的改善。
