Acta Physica Sinica, Volume. 69, Issue 6, 064206-1(2020)

Untrafast smoothing scheme based on dynamic interference structure between beamlets of laser quad

Hao Xiong1, Zhe-Qiang Zhong1, Bin Zhang1、*, Zhan Sui2, and Xiao-Min Zhang2
Author Affiliations
  • 1College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China
  • 2China Academy of Engineering Physics, Mianyang 621900, China
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    Figures & Tables(9)
    Schematic illustration of smoothing by dynamic interference structures of beamlets.
    The contrast of focal spots with different phase modulation.
    Dynamic interference structures with different kinds of phase modulation: (a) Tilted phase; (b) cylinder phase; (c) ellipsoid phase; (d) spiral phase.
    (a) Variation of contrast with integral time and (b) FOAPI curves with different phase plate array.
    Variation of contrast with integral time with different PV.
    Variation of contrast with integral time of different Δλ: (a) 80% energy of the 600 μm × 500 μm focal spot; (b) 30% energy of the 600 μm × 500 μm focal spot; (c) 80% energy of the 350 μm × 350 μm focal spot.
    Focused intensity distributions with different smoothing scheme: (a) CPP only; (b) 2D-SSD + CPP; (c) smoothing by dynamic interference structures of beamlets + CPP; (d) smoothing by dynamic interference structures of beamlets+2D-SSD + CPP.
    (a) Variation of contrast with integral time and (b) FOPAI curves with different smoothing scheme.
    • Table 1.

      2D-Fourier transform of different phase distribution.

      不同相位分布的二维傅里叶变换表达式

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      Table 1.

      2D-Fourier transform of different phase distribution.

      不同相位分布的二维傅里叶变换表达式

      $ {\varphi }_{1}(x_{f}, y_{f}) $$ B_{1}(x_{f}, y_{f}) $$ b_{1}(x_{f}, y_{f}) $
      x$ {\delta }[x_{f}/({\lambda f})+1/(2\text{π} )]{\delta }[y_{f}/({\lambda f})] $0
      x2$ \text{π} ^{1/2}\delta [y_{f}/(\lambda f) ]$$ \text{π} ^{2}x_{f}^{2}/({\lambda }^{2}f^{2})-3\text{π} /4 $
      $ -[h_{1}{ }(x/w)^{2}+ h_{2}(y/w)^{2}] $$ w^{2}\text{π} (h_{1}h_{2})^{-1/2} $$ \text{π} ^{2}x_{f}^{2}/(h_{1}{\lambda }^{2}f^{2}w^{2})+\text{π} ^{2}y_{f}^{2}/(h_{2}{\lambda }^{2}f^{2}w^{2})-3\text{π} /2 $
      $ \arctan(y/x) $$ [-{\lambda f}/(2\text{π} )]\{ {\delta }[x_{f}/({\lambda f})]{\rm d}{\delta }[y_{f}/({\lambda f})]/{\rm d}y_{f }- {\rm i}{\delta }[y_{f}/({\lambda f})]{\rm d}\delta [x_{f}/({\lambda f})]/{\rm d}x_{f}\} $
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    Hao Xiong, Zhe-Qiang Zhong, Bin Zhang, Zhan Sui, Xiao-Min Zhang. Untrafast smoothing scheme based on dynamic interference structure between beamlets of laser quad[J]. Acta Physica Sinica, 2020, 69(6): 064206-1

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    Paper Information

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    Received: Jun. 20, 2019

    Accepted: --

    Published Online: Nov. 19, 2020

    The Author Email:

    DOI:10.7498/aps.69.20190962

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