Detección de pistón por polarimetría
Keywords:
Segmented mirrors, polarization, cophasing, piston detection, curvature sensingAbstract
We report a qualitative method to detect piston errors in an optical segmented surface. The test consists of illuminating a segmented surface, with a spherical wavefront coming from a linearly polarized beam. The behavior of the vectors of polarization of the light in the reflected beam are analyzed doing the experimental measurement of the Stokes parameters U and Q, rotating the analyzer for four positions of 0, 45, 90 and 135 degrees. The mirror used for this test has 20 and 120 centimeters for the diameter and the paraxial radius of curvature, respectively.Downloads
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Authors retain copyright and grant the Revista Mexicana de Física right of first publication with the work simultaneously licensed under a CC BY-NC-ND 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.