An ultra-broadband optical system for ALMA Band 2+3

V. Tapia, R. Nesti, A. González, I. Barrueto, F. P. Mena, N. Reyes, F. Villa, F. Cuttaia, P. Yagoubov

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

4 Citations (Scopus)


ALMA is the largest radio astronomical facility in the world providing high sensitivity between 35 and 950 GHz, divided in 10 bands with fractional bandwidths between 19 and 36%. Having a lifespan of at least 30 years, ALMA carries out a permanent upgrading plan which, for the receivers, is focused on achieving better sensitivity and larger bandwidths. As result, an international consortium works on demonstrating a prototype receiver covering currents Bands 2 and 3 (67 to 116 GHz) which corresponds to a fractional bandwidth of 54%. Here we present the preliminary design, implementation and characterization of suitable refractive optics. Results indicate an excellent performance in good agreement with simulations.
Original languageEnglish
Title of host publicationMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII
EditorsWayne S. Holland, Jonas Zmuidzinas
Place of PublicationBellingham
Number of pages7
Publication statusPublished - 1 Jul 2016
Externally publishedYes

Publication series

NameProceedings of SPIE
ISSN (Print)0277-786X


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