Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/215831
COMPARTIR / EXPORTAR:
SHARE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | MEGARA anti-reflective coatings: theoretical and observed throughput estimations |
Autor: | Ortiz, R.; Carrasco, E.; Páez, G.; Pompa, O.; Sánchez-Blanco, E.; Gil de Paz, A.; Gallego, J.; Iglesias-Páramo, J. CSIC ORCID | Palabras clave: | Antireflection coatings Broadband coatings Gtc Megara Optical design Optical testing Thin films |
Fecha de publicación: | 2018 | Citación: | Proceedings of SPIE - The International Society for Optical Engineering 10706: 107065H (2018) | Resumen: | MEGARA is the new integral field unit (IFU) and multi-object (MOS) spectrograph successfully commissioned at Gran Telescopio Canarias, in August 2017. MEGARA provides spectral resolutions R (fwhm) ~ 6000, 12000 and 20000, via volume phase holographic gratings, at very high efficiency in both IFU and MOS modes. In the case of MEGARA main optics and pupil elements optics, the surfaces in contact with air have an anti-reflective (AR) coatings to minimize the Fresnel losses at the interface glass-air. In this work we present the designs and calculation of the total throughput of the optical system based in the transmission measurements of the AR coated witness samples. The results reflect the benefits of having implemented customized AR coatings for the mean angle of incidence on each surface as the measured throughput was better than the requirements. We analyze the effects of the pupil elements AR coatings for each spectral configuration. © 2018 SPIE | Versión del editor: | http://dx.doi.org/10.1117/12.2313976 | URI: | http://hdl.handle.net/10261/215831 | DOI: | 10.1117/12.2313976 | Identificadores: | doi: 10.1117/12.2313976 issn: 0277-786X isbn: 978-1-5106-1966-1 |
Aparece en las colecciones: | (IAA) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
IAA_2018SPIE10706E..5HO.pdf | 3,12 MB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
Page view(s)
128
checked on 23-abr-2024
Download(s)
162
checked on 23-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.