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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 9 — Mar. 20, 2012
  • pp: 1352–1356

Opaque optics thickness measurement using a cyclic path optical configuration setup and polarization phase shifting interferometry

Y. Pavan Kumar and Sanjib Chatterjee  »View Author Affiliations


Applied Optics, Vol. 51, Issue 9, pp. 1352-1356 (2012)
http://dx.doi.org/10.1364/AO.51.001352


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Abstract

Thickness measurement of an opaque optics using a cyclic path optical configuration (CPOC) setup and polarization phase shifting interferometry (PPSI) is presented. The CPOC setup is used to simultaneously focus two orthogonally polarized counterpropagating converging beams at its hypotenuse arm. The opaque optics is placed at the hypotenuse arm of the CPOC setup such that one of its surfaces reflects back one of the counterpropagating focusing beams. Because of the thickness of the opaque optics, the other focusing beam suffers a longitudinal shift in the beam focus. Applying PPSI, the longitudinal shift in the beam focus which is twice the thickness of the opaque optics is determined. The results obtained for a silicon plate of thickness 0.660 mm with a measurement uncertainty of 0.013 mm are presented.

© 2012 Optical Society of America

OCIS Codes
(120.1680) Instrumentation, measurement, and metrology : Collimation
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(260.5430) Physical optics : Polarization

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: September 8, 2011
Revised Manuscript: November 15, 2011
Manuscript Accepted: November 23, 2011
Published: March 15, 2012

Citation
Y. Pavan Kumar and Sanjib Chatterjee, "Opaque optics thickness measurement using a cyclic path optical configuration setup and polarization phase shifting interferometry," Appl. Opt. 51, 1352-1356 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-9-1352

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