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Proceedings Paper

Determination of the asphericity degree of a transparent reference sphere with a vectorial shearing interferometer
Author(s): Claudio Ramirez; Marija Strojnik; Paulino Vacas-Jacques; Enoch Gutierrez Herrera
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Paper Abstract

We examine the viability of implementing the Vectorial Shearing Interferometer (VSI) in order to determine the sphericity of a glass standard patron. We use the patron sphere as an optical component to collimate the expanded wave front of a laser. The collimated wave front impinges on the VSI. The resulting fringe pattern carries the phase gradient information of the original wave front, in the sheared direction. We estimate qualitatively the asphericity of the element under test, comparing the phase gradients in different sections of the sphere. When the gradients of two or more directions are identical, we consider that the standard patron has uniform sphericity. Here, we report on the experimental setup to test the asphericity, the experimental results, and perform comparison with theoretical calculations.

Paper Details

Date Published: 26 September 2007
PDF: 11 pages
Proc. SPIE 6678, Infrared Spaceborne Remote Sensing and Instrumentation XV, 66781O (26 September 2007); doi: 10.1117/12.730846
Show Author Affiliations
Claudio Ramirez, Ctr. de Investigaciones en Óptica (Mexico)
Marija Strojnik, Ctr. de Investigaciones en Óptica (Mexico)
Paulino Vacas-Jacques, Ctr. de Investigaciones en Óptica (Mexico)
Enoch Gutierrez Herrera, Ctr. de Investigaciones en Óptica (Mexico)

Published in SPIE Proceedings Vol. 6678:
Infrared Spaceborne Remote Sensing and Instrumentation XV
Marija Strojnik-Scholl, Editor(s)

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