Share Email Print
cover

Proceedings Paper

Design and testing of AR coatings for MEGARA optics
Author(s): R. Ortiz; E. Carrasco; G. Páez; O. Pompa; E. Sanchez-Blanco; A. Gil de Paz; J. Gallego; J. Iglesias-Páramo
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We present the antireflection coatings of the optical elements of MEGARA, the new integral field and multi-object spectrograph for the Gran Telescopio Canarias. We describe the methodology for optimizing the solutions. We also present the results of the final deposited coatings. The main optics require broadband coatings in the range from 370 nm to 980 nm for different materials with a mean R<1.3% at specific angles of incidence in each surface. For each material a specific arrangement of thicknesses of the same eight layers were produced and tested. For the spectrograph pupil elements four layer coatings were designed and produced R<0.3%. The design of main optics and pupil elements coatings have been shared between INAOE and CIO. The coating depositions have been performed at CIO in the Integrity 39 Denton Vacuum Deposition System. The main optics final coatings fulfill MEGARA requirements.

Paper Details

Date Published: 9 August 2016
PDF: 14 pages
Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 990886 (9 August 2016); doi: 10.1117/12.2232210
Show Author Affiliations
R. Ortiz, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
E. Carrasco, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
G. Páez, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
O. Pompa, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
E. Sanchez-Blanco, FRACTAL S.L.N.E (Spain)
A. Gil de Paz, Univ. Complutense de Madrid (Spain)
J. Gallego, Univ. Complutense de Madrid (Spain)
J. Iglesias-Páramo, Instituto de Astrofísica de Andalucía (Spain)


Published in SPIE Proceedings Vol. 9908:
Ground-based and Airborne Instrumentation for Astronomy VI
Christopher J. Evans; Luc Simard; Hideki Takami, Editor(s)

© SPIE. Terms of Use
Back to Top