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Proceedings Paper

Lithium niobate Fabry-Perot etalons in double-pass configuration for spectral filtering in the visible imager magnetograph IMaX for the SUNRISE mission
Author(s): A Álvarez-Herrero; T. Belenguer; C. Pastor; R. L. Heredero; G. Ramos; V. Martínez Pillet; J. A. Bonet Navarro
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Paper Abstract

The Imaging MAgnetograph eXperiment, IMaX, is one of the three postfocal instruments of the Sunrise mission. The Sunrise project consists of a stratospheric balloon with a 1 m aperture telescope, which will fly from the Antarctica within the NASA Long Duration Balloon Program. IMaX should work as a diffraction limited imager and it should be capable to carry out polarization measurements and spectroscopic analysis with high resolution (50.000-100.000 range). The spectral resolution required will be achieved by using a LiNbO3 (z-cut) Fabry-Perot etalon in double pass configuration as spectral filter. Up to our knowledge, few works in the literature describe the associated problems of using these devices in an imager instrument (roughness, off-normal incidence, polarization sensitivity...). Because of that, an extensive and detailed analysis of etalon has been carried out. Special attention has been taken in order to determine the wavefront transmission error produced by the imperfections of a real etalon in double pass configuration working in collimated beam. Different theoretical models, numeric simulations and experimental data are analysed and compared obtaining a complete description of the etalon response.

Paper Details

Date Published: 14 June 2006
PDF: 16 pages
Proc. SPIE 6265, Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter, 62652G (14 June 2006); doi: 10.1117/12.671966
Show Author Affiliations
A Álvarez-Herrero, Instituto Nacional de Técnica Aeroespacial (Spain)
T. Belenguer, Instituto Nacional de Técnica Aeroespacial (Spain)
C. Pastor, Instituto Nacional de Técnica Aeroespacial (Spain)
R. L. Heredero, Instituto Nacional de Técnica Aeroespacial (Spain)
G. Ramos, Instituto Nacional de Técnica Aeroespacial (Spain)
V. Martínez Pillet, Instituto de Astrofísica de Canarias (Spain)
J. A. Bonet Navarro, Instituto de Astrofísica de Canarias (Spain)


Published in SPIE Proceedings Vol. 6265:
Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter
John C. Mather; Howard A. MacEwen; Mattheus W. M. de Graauw, Editor(s)

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