title: High-quality near-field beam achieved in a high-power laser based on SLM adaptive beam-shaping system.
abstract: 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.
authors.forename: Sensen
authors.initials: S
authors.lastname: Li
authors.forename: Yulei
authors.initials: Y
authors.lastname: Wang
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Lu
authors.forename: Lei
authors.initials: L
authors.lastname: Ding
authors.forename: Pengyuan
authors.initials: P
authors.lastname: Du
authors.forename: Yi
authors.initials: Y
authors.lastname: Chen
authors.forename: Zhenxing
authors.initials: Z
authors.lastname: Zheng
authors.forename: Dexin
authors.initials: D
authors.lastname: Ba
authors.forename: Yongkang
authors.initials: Y
authors.lastname: Dong
authors.forename: Hang
authors.initials: H
authors.lastname: Yuan
authors.forename: Zhenxu
authors.initials: Z
authors.lastname: Bai
authors.forename: Zhaohong
authors.initials: Z
authors.lastname: Liu
authors.forename: Can
authors.initials: C
authors.lastname: Cui