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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 29 — Oct. 10, 2011
  • pp: 5655–5661

Study on the wide-angle Michelson interferometer with large air gap

Haiyang Gao, Yuanhe Tang, Dengxin Hua, and Hanchen Liu  »View Author Affiliations

Applied Optics, Vol. 50, Issue 29, pp. 5655-5661 (2011)

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A wide-angle Michelson interferometer with large air gap is proposed to effectively reduce the size of the glass arms and constraint on material. It provides a novel and practical instrument for ground based wind measurement of the upper atmosphere. The field widening conditions for the large air gap are calculated in theory. For the five spectral lines of 557.7 nm , 630.0 nm , 732.0 nm , 834.6 nm , and 865.7 nm , the optimal results under ideal condition are obtained with air gaps of 1.0 cm , 1.5 cm , and 2.0 cm , respectively. With the fixed optical path difference (OPD) of 7.495 cm , three pairs of glass arms are optimized. The pair with length of 1.5 cm for air gap, 5.765 cm for H-ZF12, and 2.956 cm for H-ZLaF54, has better effect of field widening than the other two pairs and its OPD variation is only within 0.30 wavelengths at incident angle of 3 ° . For developing a more practical wide-angle Michelson interferometer, the H-K9L glass with size of 4.445 cm is employed as the arm material of solid interferometer. The experiment for field of view of 3 ° is designed and the data processing and analysis for 60 images show the agreement between experimental results and theoretical simulation. The OPD variations are only within 0.27 wavelengths for image edge. The feasibility and practicality of the wide-angle Michelson interferometer with large air gap is proved by means of theory and experiment.

© 2011 Optical Society of America

OCIS Codes
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(280.4788) Remote sensing and sensors : Optical sensing and sensors
(010.0280) Atmospheric and oceanic optics : Remote sensing and sensors

ToC Category:
Atmospheric and Oceanic Optics

Original Manuscript: May 17, 2011
Revised Manuscript: July 30, 2011
Manuscript Accepted: August 15, 2011
Published: October 5, 2011

Haiyang Gao, Yuanhe Tang, Dengxin Hua, and Hanchen Liu, "Study on the wide-angle Michelson interferometer with large air gap," Appl. Opt. 50, 5655-5661 (2011)

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