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Proceedings Paper

Misalignment study for a Dove prism employing exact ray trace
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Paper Abstract

We are designing, fabricating and characterizing a Dove prism for interferometric use. In a previous work, we determined the prism tolerance to manufacturing errors. When the manufacturing tolerance of the angles is maintained within ± 0.35 arc sec, the maximum wave-front deviation is better than λ/10 at 633 nm. We evaluated the change in the image quality introduced by this performance deterioration. In this work, we study the optical (angular) and the error-induced misalignments, caused by a real Dove prism, using exact ray trace. A Dove prism is aligned when the interferometer optical axis and the prism axis are collinear. We determine the tolerance to misalignment of the Dove prism for its incorporation in a Rotationally-Shearing Interferometer (RSI). We show that it is possible to reduce the wave-front deviation caused by base-angle errors with a specific optical misalignment. The misalignment analysis of a Dove prism, with an index of refraction of 1.515, shows that to ensure a maximum OPD of λ/10 (at 633 nm) the tolerance to misalignment must be ± 0.33 arc sec.

Paper Details

Date Published: 26 September 2007
PDF: 12 pages
Proc. SPIE 6678, Infrared Spaceborne Remote Sensing and Instrumentation XV, 66781L (26 September 2007); doi: 10.1117/12.731327
Show Author Affiliations
Enoch Gutierrez-Herrera, Ctr. de Investigaciones en Optica (Mexico)
Marija Strojnik, Ctr. de Investigaciones en Optica (Mexico)

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

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