Current Optics and Photonics

Optical Society of Korea (한국광학회)
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Research on the Technology of Alternative Continuous Wide Spectral Spatial Heterodyne Spectrometer

  • Zhang, Wenli (College of Communication Engineering, Chongqing University) ;
  • Tian, Fengchun (College of Communication Engineering, Chongqing University) ;
  • Zhao, Zhenzhen (College of Communication Engineering, Chongqing University) ;
  • Song, An (College of Communication Engineering, Chongqing University) ;
  • Zhang, Li (College of Communication Engineering, Chongqing University)
  • Received : 2016.09.17
  • Accepted : 2017.05.11
  • Published : 2017.08.25
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Abstract

An innovative system for the alternative continuous wide spectral spatial heterodyne spectrometer (ACWS-SHS) is proposed. The relationship between the ACWS-SHS and the wide spectral spatial heterodyne spectrometer (WS-SHS) at the resolution limit, the spectral range, the grating diffraction efficiency and the interference fringes contrast ratio has been analyzed theoretically. Through the comparison of the theoretical analysis and simulation results, it is found that the two systems for the WS-SHS and the ACWS-SHS have the same resolution limit and spectral range, which are ${\delta}{\sigma}$ and ${\sigma}_{01}$, while in the ACWS-SHS system the critical diffraction efficiency of echelle grating is 68.39% and the critical contrast ratio of interference fringes is 0.4135, which is much better than the performance of the WS-SHS system. Therefore, the ACWS-SHS reduces the high requirements for the precision of equipment and expands the application field of SHS effectively.

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References

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