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Arbitrary phasing technique for two-dimensional coherent laser array based on an active segmented mirror.

Yi Zheng1, Xiaohua Wang, Li Deng

  • 1The Laboratory on Adaptive Optics, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, Sichuan, China. Zhengyi_ioe@163.com

Applied Optics
|May 27, 2011
PubMed
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Researchers developed a new laser phasing technique for coherent laser arrays, achieving arbitrary phase control. This method enables precise beam steering without inertia, demonstrated in a seven-channel experiment.

Area of Science:

  • Optics and Photonics
  • Laser Technology
  • Beam Control Systems

Background:

  • Coherent laser arrays require precise phase control for applications like beam steering.
  • Existing phasing techniques may have limitations in achieving arbitrary phase intervals.
  • Advanced beam manipulation is crucial for fields such as directed energy and optical communications.

Purpose of the Study:

  • To introduce a novel phasing technique for coherent laser arrays.
  • To demonstrate arbitrary phase control within the 0-π interval.
  • To validate the technique through experimental verification and inertia-free beam steering.

Main Methods:

  • Development of a novel arbitrary phasing technique for coherent laser arrays.
  • Design and implementation of a seven-channel laser array experiment.

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Last Updated: Jun 1, 2026

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  • Utilizing a custom beam arraying structure for hexagonal beamlet arrangement.
  • Employing interferometric wavefront sensing within a phase-locking loop.
  • Implementing an active segmented mirror with proportional control for phasing.

    • Main Results:

    • Successful arbitrary phasing of a coherent laser array in the 0-π interval.
    • Experimental verification with all beamlets properly phased.
    • Demonstration of inertia-free beam steering using the phased laser array.
    • Validation of the custom beam arraying structure and phase-locking loop.

    Conclusions:

    • The novel phasing technique provides precise and arbitrary phase control for coherent laser arrays.
    • The experimental setup successfully demonstrated the efficacy of the developed phasing method.
    • The technique facilitates advanced applications such as inertia-free beam steering.