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18-19 June 2018
Fermilab, Wilson Hall
US/Central timezone

A compact millimeter-wavelength Fourier-transform spectrometer

Jun 19, 2018, 3:30 PM
One West (Fermilab, Wilson Hall)

One West

Fermilab, Wilson Hall

Oral Presentation R & D


Mr Zhaodi Pan (The University of Chicago)


Fourier Transform Spectrometers (FTSs) have been widely used in many fields for characterizing the power spectrum of radiation. In this talk we present development of an FTS operating between 50 GHz and 330 GHz. Our FTS design features a small size of 15"x10"x3" and weighs only 13 lbs. The hardware, operating software, and analysis software for the FTS have been standardized to make the production and application easy. The FTS has a throughput of 100 mm^2 sr and a frequency resolution of 4 GHz, with sensitivity to both polarization components. The optical transfer efficiency is 92%±5%, and the modulation contrast is -55±3% with a band-defining filter. Beam and frequency distortion properties are characterized by a frequency-mapping experiment and compared to ray-tracing simulations. We also discuss applications to detector and material characterizations, including detector spectrum measurements for the South Pole Telescope.

Primary author

Mr Zhaodi Pan (The University of Chicago)


Prof. Bradford Benson (The University of Chicago, Fermilab) Ms Hazal Goksu (CERN) Ms Mira Liu-Sarkar (The University of Chicago) Dr Ritoban Basu Thakur (The University of Chicago) Prof. Stephan Meyer (The University of Chicago)

Presentation Materials