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Compact millimeter-wavelength Fourier-transform spectrometer

Pan, Zhaodi and Liu, Mira and Basu Thakur, Ritoban and Benson, Bradford A. and Fixsen, Dale J. and Goksu, Hazal and Rath, Eleanor and Meyer, Stephan S. (2019) Compact millimeter-wavelength Fourier-transform spectrometer. Applied Optics, 58 (23). pp. 6257-6267. ISSN 0003-6935. doi:10.1364/AO.58.006257.

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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  mm^2 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 motorized stage as the single moving element. We characterize the performance of the FTS, compare the measurements to an optical simulation, and discuss features that relate to details of the FTS design. The simulation is also used to determine the tolerance of optical alignments for the required specifications. We detail the FTS mechanical design and provide the control software as well as the analysis code online.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Pan, Zhaodi0000-0002-6164-9861
Basu Thakur, Ritoban0000-0002-3351-3078
Benson, Bradford A.0000-0002-5108-6823
Additional Information:© 2019 Optical Society of America. Received 20 May 2019; revised 11 July 2019; accepted 11 July 2019; posted 12 July 2019 (Doc. ID 367920); published 6 August 2019. Funding: National Science Foundation (NSF) (PHY-1125897, PLR-1248097); Kavli Foundation; Gordon and Betty Moore Foundation (GBMF 947). The authors thank John Carlstrom for his instrument and useful discussions.
Funding AgencyGrant Number
Kavli FoundationUNSPECIFIED
Gordon and Betty Moore Foundation947
Issue or Number:23
Record Number:CaltechAUTHORS:20190830-132055666
Persistent URL:
Official Citation:Zhaodi Pan, Mira Liu, Ritoban Basu Thakur, Bradford A. Benson, Dale J. Fixsen, Hazal Goksu, Eleanor Rath, and Stephan S. Meyer, "Compact millimeter-wavelength Fourier-transform spectrometer," Appl. Opt. 58, 6257-6267 (2019).
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98375
Deposited By: Tony Diaz
Deposited On:30 Aug 2019 20:37
Last Modified:16 Nov 2021 17:38

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