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Walker, C (author), Kusela, C. (author), Young, A (author), Verts, W. (author), Gao, J.R. (author), Hu, Qing (author), Silva, J. R.G. (author), Mirzaei, B. (author), Laauwen, Wouter (author)Gal/Xgal U/LDB Spectroscopic/ Stratospheric THz Observatory (GUSTO) is a NASA Explorers Mission of Opportunity that will make large scale maps of the Milky Way and Large Magellanic Cloud in three important interstellar lines: [CII], [OI], and [NII] at 158, 63, and 205 μm, respectively. During its ~75 day stratospheric (~36 km) flight, GUSTO’s 0...conference paper 2022
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Mirzaei, B. (author), Gan, Y. (author), Finkel, M. (author), Groppi, Christopher (author), Young, Abram (author), Walker, Christopher (author), Hu, Qing (author), Gao, J.R. (author)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 ×...journal article 2021
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Gan, Yuner (author), Mirzaei, B. (author), Silva, Jose R.G. (author), Khalatpour, Ali (author), Hu, Qing (author), Groppi, Christopher (author), Siles, Jose V. (author), van der Tak, Floris (author), Gao, J.R. (author)Large heterodyne receiver arrays (~100 pixel) allow astronomical instrumentations to map more area within limited space mission lifetime. One challenge is to generate multiple local oscillator (LO) beams. Here, we succeeded in generating 81 beams at 3.86 THz by combining a reflective, metallic Fourier grating with an unidirectional antenna...journal article 2019
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Mirzaei, B. (author), Silva, J. R.G. (author), Hayton, D (author), Groppi, C (author), Kao, T. Y. (author), Hu, Q. (author), Reno, John L. (author), Gao, J.R. (author)We present an 8-beam local oscillator (LO) for the astronomically significant [OI] line at 4.7 THz. The beams are generated using a quantum cascade laser (QCL) in combination with a Fourier phase grating. The grating is fully characterized using a third order distributed feedback (DFB) QCL with a single mode emission at 4.7 THz as the input....journal article 2017
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Hayton, Darren J. (author), Gao, J.R. (author), Laauwen, Wouter (author), Mirzaei, B. (author), Khudchenko, Andrey (author), Kloosterman, Jenna L. (author), Paveliev, Dmitry (author), Hu, Qing (author), Kao, Wilt (author), Vax, Vladimir (author), Walker, Chris K. (author)We report on a 4.7 THz heterodyne receiver designed for high resolution spectroscopy of the astronomically important neutral oxygen (OI) line at 4.745 THz. The receiver is based around a hot electron bolometer (HEB) mixer and quantum cascade laser (QCL) local oscillator. This receiver has been developed to fly on the Stratospheric Terahertz...conference paper 2017
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Mirzaei, B. (author), van Marrewijk, N.T. (author), Hayton, D (author), Gao, J.R. (author), Kao, T. Y. (author), Hu, Q. (author), Reno, John L. (author)We have performed frequency locking of a dual, forward reverse emitting 3rd order distributed feedback quantum cascade laser (QCL) at 3.5 THz. By using both directions of THz emission in combination with two gas cells and two power detectors, we can for the first time perform frequency stabilization, while monitor the frequency locking...conference paper 2017
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Van Marrewijk, N. (author), Mirzaei, B. (author), Hayton, D. (author), Gao, J.R. (author), Kao, T.Y. (author), Hu, Q. (author), Reno, J.L. (author)We have performed frequency locking of a dual, forward reverse emitting third-order distributed feedback quantum cascade laser (QCL) at 3.5 THz. By using both directions of THz emission in combination with two gas cells and two power detectors, we can for the first time perform frequency stabilization, while monitor the frequency locking quality...journal article 2015