Preprints
https://doi.org/10.5194/amt-2021-81
https://doi.org/10.5194/amt-2021-81

  19 Mar 2021

19 Mar 2021

Review status: a revised version of this preprint was accepted for the journal AMT.

A compact static birefringent interferometer for the measurement of upper atmospheric winds: concept, design and lab performance

Tingyu Yan1,2, Jeffery A. Langille2, William E. Ward2, William A. Gault, Alan Scott3, Andrew Bell5, Driss Touahiri4, Sheng-Hai Zheng3, and Chunmin Zhang1 Tingyu Yan et al.
  • 1Institute of Space Optics, Xi’an Jiaotong University, Xi’an, Shaanxi, 710049, China
  • 2University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada
  • 3Honeywell, Ottawa, Ontario
  • 4VIAVI Solutions, Ottawa, Ontario
  • 5TNO Space Systems, Stieltjesweg, Netherlands
  • deceased

Abstract. A new compact static birefringent Doppler wind imaging interferometer has been developed for the purpose of observing upper atmospheric winds using suitably isolated airglow emissions. The instrument, called the Birefringent Doppler Wind imaging Interferometer (BIDWIN), combines a field widened birefringent delay plate placed between two crossed Wollaston prisms with an imaging system, waveplates and polarizers to produce four fixed 90-degree phase stepped images of the interference fringes conjugate to the scene of interest. A four-point algorithm is used to extract line of sight Doppler wind measurements across the image of the scene. The arrangement provides a similar throughput to that of a field widened Michelson interferometer, albeit constructed without moving parts. Consequently, the instrument provides a compact, lightweight and robust alternative. In this paper, the instrument concept is presented and the design and optimization of a prototype version of the instrument is discussed. Characterization of the lab prototype is presented and the performance of the instrument is examined by applying the instrument to measure a low velocity two-dimensional Doppler wind field with a high precision (5 m/s) in the lab.

Tingyu Yan et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on amt-2021-81', Anonymous Referee #1, 01 Apr 2021
    • RC2: 'Optical sensor', Anonymous Referee #2, 05 May 2021
    • AC1: 'Reply on RC1', Jeffery Langille, 19 Jun 2021

Tingyu Yan et al.

Tingyu Yan et al.

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