Simple FTS Measurement System for Submillimeter SIS Mixer |
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| Authors: | Ken''ichi Kikuchi Yasunori Fujii Junji Inatani |
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| Affiliation: | (1) Low Energy Astrophysics, SRON Netherlands Institute for Space Research, Landleven 12, 9747 AD Groningen, The Netherlands;(2) SRON Netherlands Institute for Space Research, Landleven 12, 9747 AD Groningen, The Netherlands;(3) Kapteyn Astronomical Institute, University of Groningen, Landleven 12, 9747 AD Groningen, The Netherlands;(4) Astro Space Centre of P.N. Lebedev Physical Institute, Moscow, Russia;(5) Moscow State Pedagogical University, Moscow, Russia;(6) Sternberg Astronomical Institute, Moscow State University, Moscow, Russia;(7) Institute of Astronomy of Russian Academy of Sciences, Moscow, Russia;(8) Institute of Radio Engineering and Electronics, Moscow, Russia;(9) Institute of Applied Physics, Nizhny Novgorod, Russia;(10) SRON Netherlands Institute for Space Research, Delft Technical University, Sorbonnelaan L, 3584 CA Utrecht, The Netherlands;(11) Delft Technical University, Delft, The Netherlands;(12) University of Leiden, Leiden, The Netherlands;(13) Departamento De Astrof?sica Molecular E Infrarroja, CSIC, Madrid, Spain;(14) Centro Astronomico de Yebes, Observatorio Astronomico Nacional, Guadalajara, Spain;(15) LERMA, Observatoire de Paris, Paris, France;(16) LESIA, Observatoire de Paris, Meudon, France;(17) Istituto di Fisica dello Spazio Interplanetario (INAF), Rome, Italy;(18) University La Sapienza, Rome, Italy;(19) Onsala Space Observatory, Onsala, Sweden;(20) Chalmers University of Technology, G?teborg, Sweden;(21) Max-Planck-Institut f?r Extraterrestrische Physik, Garching, Germany;(22) Max-Planck-Institut f?r Radioastronomie, Bonn, Germany;(23) KOSMA, University of Cologne, Cologne, Germany;(24) Institut f?r Astronomie, Eidgen?ssische Technische Hochschule Z?rich, Z?rich, Switzerland;(25) National University of Ireland Maynooth, Maynooth, Ireland;(26) Radio Laboratory, TKK Helsinki University of Technology, Helsinki, Finland |
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| Abstract: | We have constructed a simple Fourier Transform Spectroscopy system, and carried out performance measurement of our 640-GHz band SIS mixer devices. This system uses the identical quasi-optics to the one for heterodyne measurement, which allows a direct and quick comparison between FTS and heterodyne responses. With a room-temperature absorber for submillimeter source, instead of a high-temperature source such as Hg lamp, we successfully obtained interferogram with good signal-to-noise ratios. The frequency resolution is moderately coarse (   17 GHz( due to a limitation on the travel length of scanning mirror for the interferometer, but we found it is useful to investigate broad-band characteristics of SIS mixers. |
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| Keywords: | Fourier Transform Spectroscopy SIS mixer submillimeter |
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