8-beam local oscillators multiplexer for GUSTO at 4.7 THz
B. Mirzaei (TU Delft - ImPhys/Optics)
Y. Gan (Rijksuniversiteit Groningen, SRON–Netherlands Institute for Space Research)
J. Silva (Rijksuniversiteit Groningen, SRON–Netherlands Institute for Space Research)
J.R. Gao (TU Delft - ImPhys/Optics, SRON–Netherlands Institute for Space Research)
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Abstract
We will report a full demonstration of the Fourier phase grating used as 4.7 THz local oscillator (LO) multiplexer for Galactic/Extragalactic ULDB Spectroscopic Terahertz Observatory (GUSTO). The design, modeling, tolerance analysis, and experimental characterization of the angular and intensity distributions among 2 × 4 output beams and the power efficiency will be presented. This is the first detailed study of a THz beam multiplexer, which will be actually integrated in an observatory.