Ray tracing, wavefronts, and caustics: use of Shack-Hartmann wavefront sensor for analyzing light propagation
Ray tracing, wavefronts, and caustics: use of Shack-Hartmann wavefront sensor for analyzing light propagation
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DOI：
10.1117/12.826207
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发表时间：
2009-08
期刊：
影响因子：
--
通讯作者：
S. Bosch;S. Vallmitjana;Carme Ferran
中科院分区：
文献类型：
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作者：
S. Bosch;S. Vallmitjana;Carme Ferran
波前测量是成像技术发展中的一个关键问题。如今，这些测量的常用工具是Shack-Hartmann传感器，其中结果通常以Zernike多项式给出。当在轴向区域中移动Shack-Hartmann传感器时，对结果的解释有时是困难的，因为它涉及可视化波前的几何传播的任务。我们提出了一个数值工具的基础上，射线追踪，可视化波前和焦散光束传播，并使泽尼克多项式的计算在任何中间阶段。
Wavefront measurements are a key point in the development of imaging techniques. Nowadays, a common tool for these measurements is the Shack-Hartmann sensor, where the results are often given in terms of the Zernike polynomials. The interpretation of the results, as one moves the Shack-Hartmann sensor in the axial zone, is sometimes difficult as it involves the task of visualizing the geometrical propagation of the wavefront. We present a numerical tool based on ray tracing that visualizes wavefronts and caustics as the beam propagates and enables the calculation of the Zernike polynomials at any intermediate stage.