光谱色散匀滑技术对衍射光学器件束匀滑性能的影响
Effect of smoothing by spectral dispersion on performance of diffractive optical element for beam smoothing
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摘要: 模拟分析了光谱色散匀滑技术对衍射光学器件束匀滑性能的影响。光谱色散匀滑技术的使用提高了衍射光学器件的抗波前畸变能力,降低了对加工精度的高要求。光谱色散匀滑技术与衍射光学器件的联用有望满足惯性约束聚变对束匀滑性能的高要求。Abstract: In this paper, the effect of smoothing by spectral dispersion (SSD) on the performance of the diffractive optical element (DOE) for beam smoothing is studied. Using SSD technique, the tolerances of the DOE for beam smoothing to wavefront distortion and fabricating error are increased, the high frequency modulation in the intensity distribution is reduced and the performance of beam smoothing is improved. Using SSD and DOE may be consistent with the rigorous demand for beam smoothing in inertial confinement fusion (ICF).
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