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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 45, Iss. 26 — Sep. 10, 2006
  • pp: 6708–6711

Folding mirror schlieren diffraction interferometer

Raj Kumar, D. P. Chhachhia, and A. K. Aggarwal  »View Author Affiliations


Applied Optics, Vol. 45, Issue 26, pp. 6708-6711 (2006)
http://dx.doi.org/10.1364/AO.45.006708


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Abstract

We demonstrate the use of a mirror as a viewing diaphragm to generate a built-in diffracted reference beam in schlieren diffraction interferometry (SDI). The use of a mirror edge as a diffracting element instead of a conventional knife edge considerably enhances the contrast of the schlieren pattern, and it is shown to be equal to that of a phase knife edge. This increase in contrast is due to the fact that the otherwise unutilized diffracted beam in SDI is recombined in the described folding mirror geometry.

© 2006 Optical Society of America

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(220.4840) Optical design and fabrication : Testing

History
Original Manuscript: November 28, 2005
Revised Manuscript: March 23, 2006
Manuscript Accepted: April 4, 2006

Citation
Raj Kumar, D. P. Chhachhia, and A. K. Aggarwal, "Folding mirror schlieren diffraction interferometer," Appl. Opt. 45, 6708-6711 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-26-6708

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