2023
DOI: 10.1364/oe.494683
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Numerical modelling for retrieval of the coating thickness variations from wavefront errors measurements

M. Baron,
B. Sassolas,
L. Pinard
et al.

Abstract: Multilayers coating are needed for large optical components performances, but the thickness non-uniformities over the useful aperture can generate spatial and chromatic variations of the reflectance, the transmittance and the wavefront errors. Although these dependences can be measured, they are difficult to anticipate if the underlying thickness variations are unknown. We present a model to retrieve these variations from wavefront error measurements that enables the computation of any optical properties over … Show more

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