18 June 1998 Design of continuous phase screens for super-Gaussian focal-plane irradiance profiles
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High performance phase screens are essential for the focal- plane irradiance profile control in laser-fusion system. A new global/local united search algorithm is presented for constructing continuous phase screens to eliminate the wide- angle scattering. The focal-plane intensity profile fits a 16th-order flat-top super-Gaussian function. More than 98.5% of the incident energy is homogeneously constrained in the desired region. The wide-angle scattering outside (phi) 1 mm in focal plane of focus spots is less than 0.5% of the incident energy.
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Jinhui Zhai, Jinhui Zhai, Yingbai Yan, Yingbai Yan, Guofan Jin, Guofan Jin, Minxian Wu, Minxian Wu, Xuezhe Zheng, Xuezhe Zheng, } "Design of continuous phase screens for super-Gaussian focal-plane irradiance profiles", Proc. SPIE 3291, Diffractive and Holographic Device Technologies and Applications V, (18 June 1998); doi: 10.1117/12.310586; https://doi.org/10.1117/12.310586

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