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Angular tolerance of Shack-Hartmann wavefront sensors with microaxicons

机译:带微轴的Shack-Hartmann波前传感器的角公差

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摘要

Wavefront sensing under nonparaxial conditions was studied with Shack-Hartmann setups based on arraysof microaxicons. The robustness of the generated pseudonondiffracting subbeams against tilt and axial displacement was demonstrated for ultraflat Gaussian- and inverse-Gaussian-shaped elements in transmission and reflection. To characterize slight aberrations and to identify optimum parameter fields, spatial moments of intensity profiles were analyzed with high sensitivity. Reflective design enables for wavefront sensing at oblique incidence as necessary for low-feedback detection and phase diagnostics of ultrashort pulses.
机译:使用基于微轴阵列的Shack-Hartmann装置研究了非傍轴条件下的波前感测。对于透射和反射中的超高斯高斯和反高斯形元素,证明了所生成的伪非衍射子光束对倾斜和轴向位移的鲁棒性。为了表征微小像差并确定最佳参数场,对强度分布的空间矩进行了高灵敏度分析。反射设计可实现斜入射的波前感测,这对于低反馈检测和超短脉冲的相位诊断是必要的。

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