@article{fd6e348c778e4b85a35b36801df38ed3,
title = "4.7 THz asymmetric beam multiplexer for GUSTO",
abstract = "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) is presented in this paper, including its design, modeling, tolerance analysis, and experimental characterizations of the angular and intensity distributions among 2 × 4 output beams and the power efficiency. A quantum cascade laser (QCL) is used to generate the input beam for evaluation of the grating performance in its all relevant aspects with an accuracy level never reported before, where good agreements with modeling results are found. This is the first asymmetric-profile grating fully modelled and characterized at a THz frequency, that further confirms the versatility of this technology for providing an intermediate optical element for feeding multiple array detectors with a single radiation source at such a scientifically interesting frequency regime.",
author = "Behnam Mirzaei and Yuner Gan and Matvey Finkel and Christopher Groppi and Abram Young and Christopher Walker and Qing Hu and Gao, {Jian Rong}",
note = "Funding Information: National Aeronautics and Space Administration (GUSTO funding); Horizon 2020 Framework Programme. We would like to thank J. R. Silva, S. Yates,W. Laauwen at SRON for their helpful discussions, and Paul Urbach at TU Delft for his support. We also thank Matt Underhill at ASU for manufacturing the grating and Ali Khalatpour for fabricating the QCL. This work was financially supported by the National Aeronautics and Space Administration (NASA) GUSTO funding through the University of Arizona. Funding Information: Acknowledgments. We would like to thank J. R. Silva, S. Yates, W. Laauwen at SRON for their helpful discussions, and Paul Urbach at TU Delft for his support. We also thank Matt Underhill at ASU for manufacturing the grating and Ali Khalatpour for fabricating the QCL. This work was financially supported by the National Aeronautics and Space Administration (NASA) GUSTO funding through the University of Arizona. Publisher Copyright: {\textcopyright} 2021 Journal.",
year = "2021",
month = jul,
day = "19",
doi = "10.1364/OE.432088",
language = "English",
volume = "29",
pages = "24434--24445",
journal = "Optics Express",
issn = "1094-4087",
publisher = "OPTICAL SOC AMER",
number = "15",
}