Development of a multi-Fourier-transform interferometer: Fundamentals

Izumi S. Ohta, Makoto Hattori, Hiroshi Matsuo

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)


We describe the development of an instrument that uses a Martin-Puplett-type Fourier-transform spectrometer to apply an aperture synthesis technique to millimeter and submillimeter waves. We call this instrument a multi-Fourier-transform interferometer (MuFT). The MuFT performs wideband imaging, spectroscopy, and polarimetry, at millimeter and submillimeter wavelengths. We describe the fundamentals of the MuFT and give an example of one potential implementation. A full description of the observables with a MuFT is provided. A physical explanation of the observability of complex visibility by the MuFT is given. Fundamental restrictions on observations with the MuFT, e.g., limits on spectral and spatial resolution and on fields of view, are discussed. The advantages of the MuFT are summarized.

Original languageEnglish
Pages (from-to)2576-2585
Number of pages10
JournalApplied optics
Issue number12
Publication statusPublished - 2006 Apr 20

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering


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