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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 9 — Mar. 20, 2011
  • pp: 1272–1279

Heterodyne grating interferometer based on a quasi-common-optical-path configuration for a two-degrees-of-freedom straightness measurement

Ju-Yi Lee, Hung-Lin Hsieh, Gilles Lerondel, Regis Deturche, Mini-Pei Lu, and Jyh-Chen Chen  »View Author Affiliations


Applied Optics, Vol. 50, Issue 9, pp. 1272-1279 (2011)
http://dx.doi.org/10.1364/AO.50.001272


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Abstract

We present a heterodyne grating interferometer based on a quasi-common-optical-path (QCOP) design for a two-degrees-of-freedom (DOF) straightness measurement. Two half-wave plates are utilized to rotate the polarizations of two orthogonally polarized beams. The grating movement can be calculated by measuring the phase difference variation in each axis. The experimental results demonstrate that our method has the ability to measure two-DOF straightness and still maintain high system stability. The proposed and demonstrated method, which relies on heterodyne interferometric phase measurement combined with the QCOP configuration, has the advantages of high measurement resolution, relatively straightforward operation, and high system stability.

© 2011 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3180) Instrumentation, measurement, and metrology : Interferometry

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: September 30, 2010
Revised Manuscript: January 14, 2011
Manuscript Accepted: January 23, 2011
Published: March 18, 2011

Citation
Ju-Yi Lee, Hung-Lin Hsieh, Gilles Lerondel, Regis Deturche, Mini-Pei Lu, and Jyh-Chen Chen, "Heterodyne grating interferometer based on a quasi-common-optical-path configuration for a two-degrees-of-freedom straightness measurement," Appl. Opt. 50, 1272-1279 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-9-1272

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