Compact millimeter-wavelength Fourier-transform spectrometer.

  title={Compact millimeter-wavelength Fourier-transform spectrometer.},
  author={Zhaodi Pan and Mira Liu and Ritoban Basu Thakur and Bradford A. Benson and Dale J. Fixsen and Hazal Goksu and Eleanor Rath and Stephan S. Meyer},
  journal={Applied optics},
  volume={58 23},
We have constructed a Fourier-transform spectrometer (FTS) operating between 50 GHz and 330 GHz with minimum volume (355×260×64  mm) and weight (5.9 kg) while maximizing optical throughput (100  mm2 sr) and optimizing the spectral resolution (4 GHz). This FTS is designed as a polarizing Martin-Puplett interferometer with unobstructed input and output in which both input polarizations undergo interference. The instrument construction is simple with mirrors milled on the box walls and one… 
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