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21 August 2009 Ray tracing, wavefronts, and caustics: use of Shack-Hartmann wavefront sensor for analyzing light propagation
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Abstract
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.
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Salvador Bosch, Santiago Vallmitjana, and Carme Ferran "Ray tracing, wavefronts, and caustics: use of Shack-Hartmann wavefront sensor for analyzing light propagation", Proc. SPIE 7429, Novel Optical Systems Design and Optimization XII, 74290L (21 August 2009); https://doi.org/10.1117/12.826207
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