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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 18 — Sep. 15, 2013
  • pp: 3600–3603

High-sensitivity roll-angle interferometer

Yanfen Le, Wenmei Hou, Kai Hu, and Kai Shi  »View Author Affiliations

Optics Letters, Vol. 38, Issue 18, pp. 3600-3603 (2013)

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A roll-angle interferometer with high sensitivity is presented in this Letter. Two sets of centrosymmetric beams are used to travel through the measurement and reference arms of the roll-angle interferometer, which contains two specific optical devices: wedge prism assembly and wedge mirror assembly. Changes of the optical path in the interferometric arms caused by roll are differential and converted into phase shift through a particular interferometer system. The interferometric beams are a completely common path for the adoption of the centrosymmetric measurement structure, and the cross talk of the straightness, yaw, and pitch errors is avoided. The dead path is minimized, so the stability and the accuracy of the measurement can be greatly enhanced. The experimental results fit well with the theoretical analysis, and a measurement resolution of sub-microradian is achieved experimentally.

© 2013 Optical Society of America

OCIS Codes
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(230.0230) Optical devices : Optical devices

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: May 27, 2013
Revised Manuscript: August 15, 2013
Manuscript Accepted: August 15, 2013
Published: September 10, 2013

Yanfen Le, Wenmei Hou, Kai Hu, and Kai Shi, "High-sensitivity roll-angle interferometer," Opt. Lett. 38, 3600-3603 (2013)

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