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Proceedings Paper

A design study on terahertz interferometry in Antarctica
Author(s): Hiroshi Matsuo; Sheng-Cai Shi; Qi-jun Yao; Yuan Luo; Taro Matsuo; Izumi S. Ohta
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Paper Abstract

Terahertz interferometry from high altitude site in Antarctica is proposed. Requirements for future terahertz astronomy are followed by comparison of interferometer technologies. Heterodyne interferometer can use matured technology and achieve high frequency resolution, whereas, direct detector interferometer can achieve observations in large bandwidth and wide field of view using focal plane arrays. As an example of direct detector interferometry multi-Fourier transform interferometer (MuFT) is introduced, which utilize Martin-Puplett type Fourier transform spectrometer, which is essential to realize multiplying interferometry to avoid atmospheric background fluctuation. As another example, photon counting interferometry is introduced. By implementing fast response FIR detectors to measure photon arrival time, visibility can be measured by the correlation of the photon statistics.

Paper Details

Date Published: 14 December 2010
PDF: 10 pages
Proc. SPIE 7854, Infrared, Millimeter Wave, and Terahertz Technologies, 785410 (14 December 2010); doi: 10.1117/12.870737
Show Author Affiliations
Hiroshi Matsuo, National Astronomical Observatory of Japan (Japan)
Sheng-Cai Shi, Purple Mountain Observatory (China)
Qi-jun Yao, Purple Mountain Observatory (China)
Yuan Luo, Tohoku Univ. (Japan)
Taro Matsuo, National Astronomical Observatory of Japan (Japan)
Izumi S. Ohta, Kinki Univ. (Japan)

Published in SPIE Proceedings Vol. 7854:
Infrared, Millimeter Wave, and Terahertz Technologies
Cunlin Zhang; Xi-Cheng Zhang; Peter H. Siegel; Li He; Sheng-Cai Shi, Editor(s)

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