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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 2 — Jan. 10, 2002
  • pp: 342–347

Reflective grating interferometer: a folded reversal and shearing wave-front interferometer

Pietro Ferraro, Sergio De Nicola, Andrea Finizio, and Giovanni Pierattini  »View Author Affiliations


Applied Optics, Vol. 41, Issue 2, pp. 342-347 (2002)
http://dx.doi.org/10.1364/AO.41.000342


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Abstract

The reflecting grating interferometer (RGI) is a folded and reversal wave-front interferometer sensitive only to asymmetrical aberrations such as third-order coma. The RGI can isolate and evaluate coma both in nearly collimated and in noncollimated beams. We propose a RGI with a different optical configuration that includes a lateral shearing in addition to folding and reversal operations. With lateral shear, the RGI also becomes sensitive to other terms of third-order aberrations such as defocusing, astigmatism, and spherical aberration. Optical path difference equations for interpreting interferograms and numerical simulations are presented to show how the interferometer works in the shearing configuration. Its potential applications are described and discussed.

© 2002 Optical Society of America

OCIS Codes
(090.1000) Holography : Aberration compensation
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(220.0220) Optical design and fabrication : Optical design and fabrication
(220.4840) Optical design and fabrication : Testing
(230.4040) Optical devices : Mirrors

History
Original Manuscript: March 6, 2001
Revised Manuscript: July 19, 2001
Published: January 10, 2002

Citation
Pietro Ferraro, Sergio De Nicola, Andrea Finizio, and Giovanni Pierattini, "Reflective grating interferometer: a folded reversal and shearing wave-front interferometer," Appl. Opt. 41, 342-347 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-2-342

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