title: Investigation of phase effects of coherent beam combining for large-aperture ultrashort ultrahigh intensity laser systems.
abstract: Large-aperture ultrashort ultrahigh intensity laser systems are able to achieve unprecedented super-high peak power. However, output power from a single laser channel is not high enough for some important applications and it is difficult to improve output power from a single laser channel significantly in the near future. Coherent beam combining is a promising method which combines many laser channels to obtain much higher peak power than a single channel. In this work, phase effects of coherent beam combining for large-aperture ultrashort laser systems are investigated theoretically. A series of numerical simulations are presented to obtain the requirements of spatial phase for specific goals and the changing trends of requirements for different pulse durations and number of channels. The influence of wavefront distortion on coherent beam combining is also discussed. Some advice is proposed for improving the performance of combining. In total, this work could help to design a practical large-aperture ultrashort ultrahigh intensity laser system in the future.
authors.forename: Ze-xi
authors.initials: ZX
authors.lastname: Zhao
authors.forename: Yan-qi
authors.initials: YQ
authors.lastname: Gao
authors.forename: Yong
authors.initials: Y
authors.lastname: Cui
authors.forename: Zhong-yang
authors.initials: ZY
authors.lastname: Xu
authors.forename: Ning
authors.initials: N
authors.lastname: An
authors.forename: Dong
authors.initials: D
authors.lastname: Liu
authors.forename: Tao
authors.initials: T
authors.lastname: Wang
authors.forename: Da-xing
authors.initials: DX
authors.lastname: Rao
authors.forename: Ming
authors.initials: M
authors.lastname: Chen
authors.forename: Wei
authors.initials: W
authors.lastname: Feng
authors.forename: Lai-lin
authors.initials: LL
authors.lastname: Ji
authors.forename: Zhao-dong
authors.initials: ZD
authors.lastname: Cao
authors.forename: Xue-dong
authors.initials: XD
authors.lastname: Yang
authors.forename: Wei-xin
authors.initials: WX
authors.lastname: Ma