Design of the optical system for ALMA Band 1

Reyes, N; Tapia, V; Henke D.; Sanchez-Carrasco, M; Mena, FP; Claude, SMX; Bronfman, L.

Keywords: efficiency, optics, lens, alma, band 1, spline-profile horn, noise temperature

Abstract

This work presents a complete study of the optical system for ALMA band 1, which covers the frequency range from 35 to 50 GHz, with the goal of extending the coverage up to 52GHz. Several options have been explored to comply with the stringent technical specifications, restrictions, and cost constraints. The best solution consists of a corrugated zoned lens, two infrared filters and a spline profiled corrugated horn. The calculated aperture efficiency is better than 75%, while the average noise contribution is lower than 10.3 K. The first prototypes of the system have been constructed and first evaluation results available

Más información

Título según WOS: Design of the optical system for ALMA Band 1
Título según SCOPUS: Design of the optical system for ALMA band 1
Título de la Revista: SILICON PHOTONICS AND PHOTONIC INTEGRATED CIRCUITS
Volumen: 9145
Editorial: SPIE-INT SOC OPTICAL ENGINEERING
Fecha de publicación: 2014
Idioma: English
DOI:

10.1117/12.2055170

Notas: ISI, SCOPUS