Angular tolerance of Shack-Hartmann wavefront sensors with microaxicons.
Angular tolerance of Shack-Hartmann wavefront sensors with microaxicons.
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DOI：
10.1364/ol.32.001533
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发表时间：
2007-06
期刊：
影响因子：
3.6
通讯作者：
R. Grunwald;S. Huferath;M. Bock;U. Neumann;S. Langer
中科院分区：
文献类型：
--
作者：
R. Grunwald;S. Huferath;M. Bock;U. Neumann;S. Langer
使用基于微轴锥阵列的 Shack-Hartmann 装置研究了非近轴条件下的波前传感。对于透射和反射中的超平高斯和反高斯形元件，证明了生成的赝非衍射子光束对抗倾斜和轴向位移的鲁棒性。为了表征轻微的像差并确定最佳参数场，以高灵敏度分析了强度分布的空间矩。反射式设计可实现斜入射波前传感，这是超短脉冲的低反馈检测和相位诊断所必需的。
Wavefront sensing under nonparaxial conditions was studied with Shack-Hartmann setups based on arrays of 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.