Fourier transform-based continuous phase-plate design technique: a high-pass phase-plate design as an application for OMEGA and the National Ignition Facility.
Fourier transform-based continuous phase-plate design technique: a high-pass phase-plate design as an application for OMEGA and the National Ignition Facility.
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DOI：
10.1364/josaa.24.000074
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
J. Marozas
中科院分区：
文献类型：
--
作者：
J. Marozas
介绍了一种能够计算近场连续相位衍射光学（或相位板）的技术，该技术没有相位位错，并且具有可选的远场散斑光谱控制。该设计技术通过增加收敛增强、相位连续性控制和远场散斑谱控制来改进标准相位恢复方法。收敛性增强提高了算法的效率。相位连续性控制消除了相位错位，并减轻了有害的后向反射和传输。一个可选的约束控制远场散斑光谱。在欧米茄和国家点火装置激光系统上应用这些相位板将产生控制良好的远场光斑形状。高通相位板的设计进行了比较，远场频谱不受控制的设计。
A technique capable of calculating near-field, continuous phase diffractive optics (or phase plates) without phase dislocations and with optional far-field, speckle-spectrum control is introduced. The design technique improves upon a standard phase-retrieval method by adding convergence enhancements, phase continuity control, and far-field, speckle-spectrum control. The convergence enhancements improve the algorithm's efficiency. Phase continuity control eliminates phase dislocations and mitigates damaging retroreflections and transmissions. Specifying an optional constraint controls the far-field speckle spectrum. Application of these phase plates on the OMEGA and National Ignition Facility laser systems would produce well-controlled far-field spot shapes. High-pass phase-plate designs are compared with designs where the far-field spectrum is not controlled.