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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 45, Iss. 12 — Apr. 20, 2006
  • pp: 2576–2585

Development of a multi-Fourier-transform interferometer: fundamentals

Izumi S. Ohta, Makoto Hattori, and Hiroshi Matsuo  »View Author Affiliations

Applied Optics, Vol. 45, Issue 12, pp. 2576-2585 (2006)

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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.

© 2006 Optical Society of America

OCIS Codes
(070.2590) Fourier optics and signal processing : ABCD transforms
(110.6770) Imaging systems : Telescopes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5410) Instrumentation, measurement, and metrology : Polarimetry
(260.3090) Physical optics : Infrared, far

Original Manuscript: June 8, 2005
Revised Manuscript: November 11, 2005
Manuscript Accepted: November 11, 2005

Izumi S. Ohta, Makoto Hattori, and Hiroshi Matsuo, "Development of a multi-Fourier-transform interferometer: fundamentals," Appl. Opt. 45, 2576-2585 (2006)

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