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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 36, Iss. 12 — Jun. 15, 2011
  • pp: 2357–2359

Interferometry using binary holograms without high order diffraction effects

Bosanta R. Boruah, Gordon D. Love, and Mark A. A. Neil  »View Author Affiliations


Optics Letters, Vol. 36, Issue 12, pp. 2357-2359 (2011)
http://dx.doi.org/10.1364/OL.36.002357


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Abstract

We describe a technique for a phase-stepping interferometer based on programmable binary phase holograms, particularly useful for optical testing of aspheric or free-form surfaces. It is well-known that binary holograms can be used to generate reference surfaces for interferometry, but a major problem is that cross talk from higher diffraction orders and aliasing can reduce the fidelity of the system. Here, we propose a new encoding technique which improves the accuracy of the technique and demonstrate its implementation using a binary liquid crystal spatial light modulator.

© 2011 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(070.6120) Fourier optics and signal processing : Spatial light modulators

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: April 21, 2011
Revised Manuscript: May 23, 2011
Manuscript Accepted: May 24, 2011
Published: June 15, 2011

Citation
Bosanta R. Boruah, Gordon D. Love, and Mark A. A. Neil, "Interferometry using binary holograms without high order diffraction effects," Opt. Lett. 36, 2357-2359 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-12-2357


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